# DatabaseMetaData

public interface **DatabaseMetaData** implements [Wrapper](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Wrapper.html) Comprehensive information about the database as a whole.


This interface is implemented by driver vendors to let users know the capabilities
of a Database Management System (DBMS) in combination with
the driver based on JDBC^TM^ technology
("JDBC driver") that is used with it. Different relational DBMSs often support
different features, implement features in different ways, and use different
data types. In addition, a driver may implement a feature on top of what the
DBMS offers. Information returned by methods in this interface applies
to the capabilities of a particular driver and a particular DBMS working
together. Note that as used in this documentation, the term "database" is
used generically to refer to both the driver and DBMS.


A user for this interface is commonly a tool that needs to discover how to
deal with the underlying DBMS. This is especially true for applications
that are intended to be used with more than one DBMS. For example, a tool might use the method
`getTypeInfo` to find out what data types can be used in a
`CREATE TABLE` statement. Or a user might call the method
`supportsCorrelatedSubqueries` to see if it is possible to use
a correlated subquery or `supportsBatchUpdates` to see if it is
possible to use batch updates.


Some `DatabaseMetaData` methods return lists of information
in the form of `ResultSet` objects.
Regular `ResultSet` methods, such as
`getString` and `getInt`, can be used
to retrieve the data from these `ResultSet` objects. If
a given form of metadata is not available, an empty `ResultSet`
will be returned. Additional columns beyond the columns defined to be
returned by the `ResultSet` object for a given method
can be defined by the JDBC driver vendor and must be accessed
by their **column label**.


Some `DatabaseMetaData` methods take arguments that are
String patterns. These arguments all have names such as fooPattern.
Within a pattern String, "%" means match any substring of 0 or more
characters, and "_" means match any one character. Only metadata
entries matching the search pattern are returned. If a search pattern
argument is set to `null`, that argument's criterion will
be dropped from the search.


### Constant Summary

|---|---|---|
| short | [attributeNoNulls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#attributeNoNulls) | Indicates that `NULL` values might not be allowed. |
| short | [attributeNullable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#attributeNullable) | Indicates that `NULL` values are definitely allowed. |
| short | [attributeNullableUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#attributeNullableUnknown) | Indicates that whether `NULL` values are allowed is not known. |
| int | [bestRowNotPseudo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowNotPseudo) | Indicates that the best row identifier is NOT a pseudo column. |
| int | [bestRowPseudo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowPseudo) | Indicates that the best row identifier is a pseudo column. |
| int | [bestRowSession](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowSession) | Indicates that the scope of the best row identifier is the remainder of the current session. |
| int | [bestRowTemporary](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowTemporary) | Indicates that the scope of the best row identifier is very temporary, lasting only while the row is being used. |
| int | [bestRowTransaction](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowTransaction) | Indicates that the scope of the best row identifier is the remainder of the current transaction. |
| int | [bestRowUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#bestRowUnknown) | Indicates that the best row identifier may or may not be a pseudo column. |
| int | [columnNoNulls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#columnNoNulls) | Indicates that the column might not allow `NULL` values. |
| int | [columnNullable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#columnNullable) | Indicates that the column definitely allows `NULL` values. |
| int | [columnNullableUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#columnNullableUnknown) | Indicates that the nullability of columns is unknown. |
| int | [functionColumnIn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionColumnIn) | Indicates that the parameter or column is an IN parameter. |
| int | [functionColumnInOut](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionColumnInOut) | Indicates that the parameter or column is an INOUT parameter. |
| int | [functionColumnOut](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionColumnOut) | Indicates that the parameter or column is an OUT parameter. |
| int | [functionColumnResult](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionColumnResult) | Indicates that the parameter or column is a column in a result set. |
| int | [functionColumnUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionColumnUnknown) | Indicates that type of the parameter or column is unknown. |
| int | [functionNoNulls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionNoNulls) | Indicates that `NULL` values are not allowed. |
| int | [functionNoTable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionNoTable) | Indicates that the function does not return a table. |
| int | [functionNullable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionNullable) | Indicates that `NULL` values are allowed. |
| int | [functionNullableUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionNullableUnknown) | Indicates that whether `NULL` values are allowed is unknown. |
| int | [functionResultUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionResultUnknown) | Indicates that it is not known whether the function returns a result or a table. |
| int | [functionReturn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionReturn) | Indicates that the parameter or column is a return value. |
| int | [functionReturnsTable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#functionReturnsTable) | Indicates that the function returns a table. |
| int | [importedKeyCascade](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyCascade) | For the column `UPDATE_RULE`, indicates that when the primary key is updated, the foreign key (imported key) is changed to agree with it. |
| int | [importedKeyInitiallyDeferred](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyInitiallyDeferred) | Indicates deferrability. |
| int | [importedKeyInitiallyImmediate](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyInitiallyImmediate) | Indicates deferrability. |
| int | [importedKeyNoAction](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyNoAction) | For the columns `UPDATE_RULE` and `DELETE_RULE`, indicates that if the primary key has been imported, it cannot be updated or deleted. |
| int | [importedKeyNotDeferrable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyNotDeferrable) | Indicates deferrability. |
| int | [importedKeyRestrict](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeyRestrict) | For the column `UPDATE_RULE`, indicates that a primary key may not be updated if it has been imported by another table as a foreign key. |
| int | [importedKeySetDefault](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeySetDefault) | For the columns `UPDATE_RULE` and `DELETE_RULE`, indicates that if the primary key is updated or deleted, the foreign key (imported key) is set to the default value. |
| int | [importedKeySetNull](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#importedKeySetNull) | For the columns `UPDATE_RULE` and `DELETE_RULE`, indicates that when the primary key is updated or deleted, the foreign key (imported key) is changed to `NULL`. |
| int | [procedureColumnIn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnIn) | Indicates that the column stores IN parameters. |
| int | [procedureColumnInOut](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnInOut) | Indicates that the column stores INOUT parameters. |
| int | [procedureColumnOut](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnOut) | Indicates that the column stores OUT parameters. |
| int | [procedureColumnResult](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnResult) | Indicates that the column stores results. |
| int | [procedureColumnReturn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnReturn) | Indicates that the column stores return values. |
| int | [procedureColumnUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureColumnUnknown) | Indicates that type of the column is unknown. |
| int | [procedureNoNulls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureNoNulls) | Indicates that `NULL` values are not allowed. |
| int | [procedureNoResult](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureNoResult) | Indicates that the procedure does not return a result. |
| int | [procedureNullable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureNullable) | Indicates that `NULL` values are allowed. |
| int | [procedureNullableUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureNullableUnknown) | Indicates that whether `NULL` values are allowed is unknown. |
| int | [procedureResultUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureResultUnknown) | Indicates that it is not known whether the procedure returns a result. |
| int | [procedureReturnsResult](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#procedureReturnsResult) | Indicates that the procedure returns a result. |
| int | [sqlStateSQL](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#sqlStateSQL) | A possible return value for the method `DatabaseMetaData.getSQLStateType` which is used to indicate whether the value returned by the method `SQLException.getSQLState` is an SQLSTATE value. |
| int | [sqlStateSQL99](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#sqlStateSQL99) | A possible return value for the method `DatabaseMetaData.getSQLStateType` which is used to indicate whether the value returned by the method `SQLException.getSQLState` is an SQL99 SQLSTATE value. |
| int | [sqlStateXOpen](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#sqlStateXOpen) | A possible return value for the method `DatabaseMetaData.getSQLStateType` which is used to indicate whether the value returned by the method `SQLException.getSQLState` is an X/Open (now know as Open Group) SQL CLI SQLSTATE value. |
| short | [tableIndexClustered](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#tableIndexClustered) | Indicates that this table index is a clustered index. |
| short | [tableIndexHashed](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#tableIndexHashed) | Indicates that this table index is a hashed index. |
| short | [tableIndexOther](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#tableIndexOther) | Indicates that this table index is not a clustered index, a hashed index, or table statistics; it is something other than these. |
| short | [tableIndexStatistic](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#tableIndexStatistic) | Indicates that this column contains table statistics that are returned in conjunction with a table's index descriptions. |
| int | [typeNoNulls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typeNoNulls) | Indicates that a `NULL` value is NOT allowed for this data type. |
| int | [typeNullable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typeNullable) | Indicates that a `NULL` value is allowed for this data type. |
| int | [typeNullableUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typeNullableUnknown) | Indicates that it is not known whether a `NULL` value is allowed for this data type. |
| int | [typePredBasic](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typePredBasic) | Indicates that the data type can be only be used in `WHERE` search clauses that do not use `LIKE` predicates. |
| int | [typePredChar](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typePredChar) | Indicates that the data type can be only be used in `WHERE` search clauses that use `LIKE` predicates. |
| int | [typePredNone](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typePredNone) | Indicates that `WHERE` search clauses are not supported for this type. |
| int | [typeSearchable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#typeSearchable) | Indicates that all `WHERE` search clauses can be based on this type. |
| int | [versionColumnNotPseudo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#versionColumnNotPseudo) | Indicates that this version column is NOT a pseudo column. |
| int | [versionColumnPseudo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#versionColumnPseudo) | Indicates that this version column is a pseudo column. |
| int | [versionColumnUnknown](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#versionColumnUnknown) | Indicates that this version column may or may not be a pseudo column. |

### Public Method Summary

|---|---|
| abstract boolean | [allProceduresAreCallable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#allProceduresAreCallable())() Retrieves whether the current user can call all the procedures returned by the method `getProcedures`. |
| abstract boolean | [allTablesAreSelectable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#allTablesAreSelectable())() Retrieves whether the current user can use all the tables returned by the method `getTables` in a `SELECT` statement. |
| abstract boolean | [autoCommitFailureClosesAllResultSets](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#autoCommitFailureClosesAllResultSets())() Retrieves whether a `SQLException` while autoCommit is `true` inidcates that all open ResultSets are closed, even ones that are holdable. |
| abstract boolean | [dataDefinitionCausesTransactionCommit](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#dataDefinitionCausesTransactionCommit())() Retrieves whether a data definition statement within a transaction forces the transaction to commit. |
| abstract boolean | [dataDefinitionIgnoredInTransactions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#dataDefinitionIgnoredInTransactions())() Retrieves whether this database ignores a data definition statement within a transaction. |
| abstract boolean | [deletesAreDetected](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#deletesAreDetected(int))(int type) Retrieves whether or not a visible row delete can be detected by calling the method `ResultSet.rowDeleted`. |
| abstract boolean | [doesMaxRowSizeIncludeBlobs](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#doesMaxRowSizeIncludeBlobs())() Retrieves whether the return value for the method `getMaxRowSize` includes the SQL data types `LONGVARCHAR` and `LONGVARBINARY`. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getAttributes](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getAttributes(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) attributeNamePattern) Retrieves a description of the given attribute of the given type for a user-defined type (UDT) that is available in the given schema and catalog. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getBestRowIdentifier](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getBestRowIdentifier(java.lang.String,%20java.lang.String,%20java.lang.String,%20int,%20boolean))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, int scope, boolean nullable) Retrieves a description of a table's optimal set of columns that uniquely identifies a row. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getCatalogSeparator](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getCatalogSeparator())() Retrieves the `String` that this database uses as the separator between a catalog and table name. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getCatalogTerm](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getCatalogTerm())() Retrieves the database vendor's preferred term for "catalog". |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getCatalogs](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getCatalogs())() Retrieves the catalog names available in this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getClientInfoProperties](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getClientInfoProperties())() Retrieves a list of the client info properties that the driver supports. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getColumnPrivileges](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getColumnPrivileges(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern) Retrieves a description of the access rights for a table's columns. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getColumns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getColumns(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern) Retrieves a description of table columns available in the specified catalog. |
| abstract [Connection](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html) | [getConnection](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getConnection())() Retrieves the connection that produced this metadata object. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getCrossReference](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getCrossReference(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentCatalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentSchema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentTable, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignCatalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignSchema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignTable) Retrieves a description of the foreign key columns in the given foreign key table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table). |
| abstract int | [getDatabaseMajorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDatabaseMajorVersion())() Retrieves the major version number of the underlying database. |
| abstract int | [getDatabaseMinorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDatabaseMinorVersion())() Retrieves the minor version number of the underlying database. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getDatabaseProductName](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDatabaseProductName())() Retrieves the name of this database product. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getDatabaseProductVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDatabaseProductVersion())() Retrieves the version number of this database product. |
| abstract int | [getDefaultTransactionIsolation](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDefaultTransactionIsolation())() Retrieves this database's default transaction isolation level. |
| abstract int | [getDriverMajorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDriverMajorVersion())() Retrieves this JDBC driver's major version number. |
| abstract int | [getDriverMinorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDriverMinorVersion())() Retrieves this JDBC driver's minor version number. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getDriverName](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDriverName())() Retrieves the name of this JDBC driver. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getDriverVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getDriverVersion())() Retrieves the version number of this JDBC driver as a `String`. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getExportedKeys](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getExportedKeys(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table) Retrieves a description of the foreign key columns that reference the given table's primary key columns (the foreign keys exported by a table). |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getExtraNameCharacters](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getExtraNameCharacters())() Retrieves all the "extra" characters that can be used in unquoted identifier names (those beyond a-z, A-Z, 0-9 and _). |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getFunctionColumns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getFunctionColumns(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) functionNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern) Retrieves a description of the given catalog's system or user function parameters and return type. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getFunctions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getFunctions(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) functionNamePattern) Retrieves a description of the system and user functions available in the given catalog. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getIdentifierQuoteString](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getIdentifierQuoteString())() Retrieves the string used to quote SQL identifiers. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getImportedKeys](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getImportedKeys(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table) Retrieves a description of the primary key columns that are referenced by the given table's foreign key columns (the primary keys imported by a table). |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getIndexInfo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getIndexInfo(java.lang.String,%20java.lang.String,%20java.lang.String,%20boolean,%20boolean))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, boolean unique, boolean approximate) Retrieves a description of the given table's indices and statistics. |
| abstract int | [getJDBCMajorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getJDBCMajorVersion())() Retrieves the major JDBC version number for this driver. |
| abstract int | [getJDBCMinorVersion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getJDBCMinorVersion())() Retrieves the minor JDBC version number for this driver. |
| abstract int | [getMaxBinaryLiteralLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxBinaryLiteralLength())() Retrieves the maximum number of hex characters this database allows in an inline binary literal. |
| abstract int | [getMaxCatalogNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxCatalogNameLength())() Retrieves the maximum number of characters that this database allows in a catalog name. |
| abstract int | [getMaxCharLiteralLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxCharLiteralLength())() Retrieves the maximum number of characters this database allows for a character literal. |
| abstract int | [getMaxColumnNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnNameLength())() Retrieves the maximum number of characters this database allows for a column name. |
| abstract int | [getMaxColumnsInGroupBy](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnsInGroupBy())() Retrieves the maximum number of columns this database allows in a `GROUP BY` clause. |
| abstract int | [getMaxColumnsInIndex](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnsInIndex())() Retrieves the maximum number of columns this database allows in an index. |
| abstract int | [getMaxColumnsInOrderBy](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnsInOrderBy())() Retrieves the maximum number of columns this database allows in an `ORDER BY` clause. |
| abstract int | [getMaxColumnsInSelect](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnsInSelect())() Retrieves the maximum number of columns this database allows in a `SELECT` list. |
| abstract int | [getMaxColumnsInTable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxColumnsInTable())() Retrieves the maximum number of columns this database allows in a table. |
| abstract int | [getMaxConnections](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxConnections())() Retrieves the maximum number of concurrent connections to this database that are possible. |
| abstract int | [getMaxCursorNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxCursorNameLength())() Retrieves the maximum number of characters that this database allows in a cursor name. |
| abstract int | [getMaxIndexLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxIndexLength())() Retrieves the maximum number of bytes this database allows for an index, including all of the parts of the index. |
| abstract int | [getMaxProcedureNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxProcedureNameLength())() Retrieves the maximum number of characters that this database allows in a procedure name. |
| abstract int | [getMaxRowSize](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxRowSize())() Retrieves the maximum number of bytes this database allows in a single row. |
| abstract int | [getMaxSchemaNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxSchemaNameLength())() Retrieves the maximum number of characters that this database allows in a schema name. |
| abstract int | [getMaxStatementLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxStatementLength())() Retrieves the maximum number of characters this database allows in an SQL statement. |
| abstract int | [getMaxStatements](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxStatements())() Retrieves the maximum number of active statements to this database that can be open at the same time. |
| abstract int | [getMaxTableNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxTableNameLength())() Retrieves the maximum number of characters this database allows in a table name. |
| abstract int | [getMaxTablesInSelect](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxTablesInSelect())() Retrieves the maximum number of tables this database allows in a `SELECT` statement. |
| abstract int | [getMaxUserNameLength](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getMaxUserNameLength())() Retrieves the maximum number of characters this database allows in a user name. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getNumericFunctions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getNumericFunctions())() Retrieves a comma-separated list of math functions available with this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getPrimaryKeys](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getPrimaryKeys(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table) Retrieves a description of the given table's primary key columns. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getProcedureColumns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getProcedureColumns(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) procedureNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern) Retrieves a description of the given catalog's stored procedure parameter and result columns. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getProcedureTerm](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getProcedureTerm())() Retrieves the database vendor's preferred term for "procedure". |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getProcedures](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getProcedures(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) procedureNamePattern) Retrieves a description of the stored procedures available in the given catalog. |
| abstract int | [getResultSetHoldability](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getResultSetHoldability())() Retrieves this database's default holdability for `ResultSet` objects. |
| abstract [RowIdLifetime](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/RowIdLifetime.html) | [getRowIdLifetime](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getRowIdLifetime())() Indicates whether or not this data source supports the SQL `ROWID` type, and if so the lifetime for which a `RowId` object remains valid. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getSQLKeywords](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSQLKeywords())() Retrieves a comma-separated list of all of this database's SQL keywords that are NOT also SQL:2003 keywords. |
| abstract int | [getSQLStateType](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSQLStateType())() Indicates whether the SQLSTATE returned by `SQLException.getSQLState` is X/Open (now known as Open Group) SQL CLI or SQL:2003. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getSchemaTerm](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSchemaTerm())() Retrieves the database vendor's preferred term for "schema". |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getSchemas](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSchemas(java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern) Retrieves the schema names available in this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getSchemas](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSchemas())() Retrieves the schema names available in this database. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getSearchStringEscape](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape())() Retrieves the string that can be used to escape wildcard characters. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getStringFunctions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getStringFunctions())() Retrieves a comma-separated list of string functions available with this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getSuperTables](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSuperTables(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern) Retrieves a description of the table hierarchies defined in a particular schema in this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getSuperTypes](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSuperTypes(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern) Retrieves a description of the user-defined type (UDT) hierarchies defined in a particular schema in this database. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getSystemFunctions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSystemFunctions())() Retrieves a comma-separated list of system functions available with this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getTablePrivileges](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTablePrivileges(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern) Retrieves a description of the access rights for each table available in a catalog. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getTableTypes](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTableTypes())() Retrieves the table types available in this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getTables](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTables(java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String[]))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern, [String\[\]](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) types) Retrieves a description of the tables available in the given catalog. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getTimeDateFunctions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTimeDateFunctions())() Retrieves a comma-separated list of the time and date functions available with this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getTypeInfo](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTypeInfo())() Retrieves a description of all the data types supported by this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getUDTs](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getUDTs(java.lang.String,%20java.lang.String,%20java.lang.String,%20int[]))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern, int\[\] types) Retrieves a description of the user-defined types (UDTs) defined in a particular schema. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getURL](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getURL())() Retrieves the URL for this DBMS. |
| abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [getUserName](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getUserName())() Retrieves the user name as known to this database. |
| abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html) | [getVersionColumns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getVersionColumns(java.lang.String,%20java.lang.String,%20java.lang.String))([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table) Retrieves a description of a table's columns that are automatically updated when any value in a row is updated. |
| abstract boolean | [insertsAreDetected](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#insertsAreDetected(int))(int type) Retrieves whether or not a visible row insert can be detected by calling the method `ResultSet.rowInserted`. |
| abstract boolean | [isCatalogAtStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#isCatalogAtStart())() Retrieves whether a catalog appears at the start of a fully qualified table name. |
| abstract boolean | [isReadOnly](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#isReadOnly())() Retrieves whether this database is in read-only mode. |
| abstract boolean | [locatorsUpdateCopy](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#locatorsUpdateCopy())() Indicates whether updates made to a LOB are made on a copy or directly to the LOB. |
| abstract boolean | [nullPlusNonNullIsNull](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#nullPlusNonNullIsNull())() Retrieves whether this database supports concatenations between `NULL` and non-`NULL` values being `NULL`. |
| abstract boolean | [nullsAreSortedAtEnd](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#nullsAreSortedAtEnd())() Retrieves whether `NULL` values are sorted at the end regardless of sort order. |
| abstract boolean | [nullsAreSortedAtStart](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#nullsAreSortedAtStart())() Retrieves whether `NULL` values are sorted at the start regardless of sort order. |
| abstract boolean | [nullsAreSortedHigh](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#nullsAreSortedHigh())() Retrieves whether `NULL` values are sorted high. |
| abstract boolean | [nullsAreSortedLow](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#nullsAreSortedLow())() Retrieves whether `NULL` values are sorted low. |
| abstract boolean | [othersDeletesAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#othersDeletesAreVisible(int))(int type) Retrieves whether deletes made by others are visible. |
| abstract boolean | [othersInsertsAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#othersInsertsAreVisible(int))(int type) Retrieves whether inserts made by others are visible. |
| abstract boolean | [othersUpdatesAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#othersUpdatesAreVisible(int))(int type) Retrieves whether updates made by others are visible. |
| abstract boolean | [ownDeletesAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#ownDeletesAreVisible(int))(int type) Retrieves whether a result set's own deletes are visible. |
| abstract boolean | [ownInsertsAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#ownInsertsAreVisible(int))(int type) Retrieves whether a result set's own inserts are visible. |
| abstract boolean | [ownUpdatesAreVisible](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#ownUpdatesAreVisible(int))(int type) Retrieves whether for the given type of `ResultSet` object, the result set's own updates are visible. |
| abstract boolean | [storesLowerCaseIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesLowerCaseIdentifiers())() Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in lower case. |
| abstract boolean | [storesLowerCaseQuotedIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesLowerCaseQuotedIdentifiers())() Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in lower case. |
| abstract boolean | [storesMixedCaseIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesMixedCaseIdentifiers())() Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in mixed case. |
| abstract boolean | [storesMixedCaseQuotedIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesMixedCaseQuotedIdentifiers())() Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in mixed case. |
| abstract boolean | [storesUpperCaseIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesUpperCaseIdentifiers())() Retrieves whether this database treats mixed case unquoted SQL identifiers as case insensitive and stores them in upper case. |
| abstract boolean | [storesUpperCaseQuotedIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#storesUpperCaseQuotedIdentifiers())() Retrieves whether this database treats mixed case quoted SQL identifiers as case insensitive and stores them in upper case. |
| abstract boolean | [supportsANSI92EntryLevelSQL](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsANSI92EntryLevelSQL())() Retrieves whether this database supports the ANSI92 entry level SQL grammar. |
| abstract boolean | [supportsANSI92FullSQL](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsANSI92FullSQL())() Retrieves whether this database supports the ANSI92 full SQL grammar supported. |
| abstract boolean | [supportsANSI92IntermediateSQL](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsANSI92IntermediateSQL())() Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported. |
| abstract boolean | [supportsAlterTableWithAddColumn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsAlterTableWithAddColumn())() Retrieves whether this database supports `ALTER TABLE` with add column. |
| abstract boolean | [supportsAlterTableWithDropColumn](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsAlterTableWithDropColumn())() Retrieves whether this database supports `ALTER TABLE` with drop column. |
| abstract boolean | [supportsBatchUpdates](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsBatchUpdates())() Retrieves whether this database supports batch updates. |
| abstract boolean | [supportsCatalogsInDataManipulation](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCatalogsInDataManipulation())() Retrieves whether a catalog name can be used in a data manipulation statement. |
| abstract boolean | [supportsCatalogsInIndexDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCatalogsInIndexDefinitions())() Retrieves whether a catalog name can be used in an index definition statement. |
| abstract boolean | [supportsCatalogsInPrivilegeDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCatalogsInPrivilegeDefinitions())() Retrieves whether a catalog name can be used in a privilege definition statement. |
| abstract boolean | [supportsCatalogsInProcedureCalls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCatalogsInProcedureCalls())() Retrieves whether a catalog name can be used in a procedure call statement. |
| abstract boolean | [supportsCatalogsInTableDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCatalogsInTableDefinitions())() Retrieves whether a catalog name can be used in a table definition statement. |
| abstract boolean | [supportsColumnAliasing](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsColumnAliasing())() Retrieves whether this database supports column aliasing. |
| abstract boolean | [supportsConvert](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsConvert(int,%20int))(int fromType, int toType) Retrieves whether this database supports the JDBC scalar function `CONVERT` for conversions between the JDBC types *fromType* and *toType*. |
| abstract boolean | [supportsConvert](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsConvert())() Retrieves whether this database supports the JDBC scalar function `CONVERT` for the conversion of one JDBC type to another. |
| abstract boolean | [supportsCoreSQLGrammar](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCoreSQLGrammar())() Retrieves whether this database supports the ODBC Core SQL grammar. |
| abstract boolean | [supportsCorrelatedSubqueries](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsCorrelatedSubqueries())() Retrieves whether this database supports correlated subqueries. |
| abstract boolean | [supportsDataDefinitionAndDataManipulationTransactions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsDataDefinitionAndDataManipulationTransactions())() Retrieves whether this database supports both data definition and data manipulation statements within a transaction. |
| abstract boolean | [supportsDataManipulationTransactionsOnly](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsDataManipulationTransactionsOnly())() Retrieves whether this database supports only data manipulation statements within a transaction. |
| abstract boolean | [supportsDifferentTableCorrelationNames](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsDifferentTableCorrelationNames())() Retrieves whether, when table correlation names are supported, they are restricted to being different from the names of the tables. |
| abstract boolean | [supportsExpressionsInOrderBy](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsExpressionsInOrderBy())() Retrieves whether this database supports expressions in `ORDER BY` lists. |
| abstract boolean | [supportsExtendedSQLGrammar](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsExtendedSQLGrammar())() Retrieves whether this database supports the ODBC Extended SQL grammar. |
| abstract boolean | [supportsFullOuterJoins](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsFullOuterJoins())() Retrieves whether this database supports full nested outer joins. |
| abstract boolean | [supportsGetGeneratedKeys](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsGetGeneratedKeys())() Retrieves whether auto-generated keys can be retrieved after a statement has been executed |
| abstract boolean | [supportsGroupBy](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsGroupBy())() Retrieves whether this database supports some form of `GROUP BY` clause. |
| abstract boolean | [supportsGroupByBeyondSelect](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsGroupByBeyondSelect())() Retrieves whether this database supports using columns not included in the `SELECT` statement in a `GROUP BY` clause provided that all of the columns in the `SELECT` statement are included in the `GROUP BY` clause. |
| abstract boolean | [supportsGroupByUnrelated](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsGroupByUnrelated())() Retrieves whether this database supports using a column that is not in the `SELECT` statement in a `GROUP BY` clause. |
| abstract boolean | [supportsIntegrityEnhancementFacility](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsIntegrityEnhancementFacility())() Retrieves whether this database supports the SQL Integrity Enhancement Facility. |
| abstract boolean | [supportsLikeEscapeClause](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsLikeEscapeClause())() Retrieves whether this database supports specifying a `LIKE` escape clause. |
| abstract boolean | [supportsLimitedOuterJoins](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsLimitedOuterJoins())() Retrieves whether this database provides limited support for outer joins. |
| abstract boolean | [supportsMinimumSQLGrammar](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMinimumSQLGrammar())() Retrieves whether this database supports the ODBC Minimum SQL grammar. |
| abstract boolean | [supportsMixedCaseIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMixedCaseIdentifiers())() Retrieves whether this database treats mixed case unquoted SQL identifiers as case sensitive and as a result stores them in mixed case. |
| abstract boolean | [supportsMixedCaseQuotedIdentifiers](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMixedCaseQuotedIdentifiers())() Retrieves whether this database treats mixed case quoted SQL identifiers as case sensitive and as a result stores them in mixed case. |
| abstract boolean | [supportsMultipleOpenResults](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMultipleOpenResults())() Retrieves whether it is possible to have multiple `ResultSet` objects returned from a `CallableStatement` object simultaneously. |
| abstract boolean | [supportsMultipleResultSets](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMultipleResultSets())() Retrieves whether this database supports getting multiple `ResultSet` objects from a single call to the method `execute`. |
| abstract boolean | [supportsMultipleTransactions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsMultipleTransactions())() Retrieves whether this database allows having multiple transactions open at once (on different connections). |
| abstract boolean | [supportsNamedParameters](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsNamedParameters())() Retrieves whether this database supports named parameters to callable statements. |
| abstract boolean | [supportsNonNullableColumns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsNonNullableColumns())() Retrieves whether columns in this database may be defined as non-nullable. |
| abstract boolean | [supportsOpenCursorsAcrossCommit](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOpenCursorsAcrossCommit())() Retrieves whether this database supports keeping cursors open across commits. |
| abstract boolean | [supportsOpenCursorsAcrossRollback](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOpenCursorsAcrossRollback())() Retrieves whether this database supports keeping cursors open across rollbacks. |
| abstract boolean | [supportsOpenStatementsAcrossCommit](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOpenStatementsAcrossCommit())() Retrieves whether this database supports keeping statements open across commits. |
| abstract boolean | [supportsOpenStatementsAcrossRollback](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOpenStatementsAcrossRollback())() Retrieves whether this database supports keeping statements open across rollbacks. |
| abstract boolean | [supportsOrderByUnrelated](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOrderByUnrelated())() Retrieves whether this database supports using a column that is not in the `SELECT` statement in an `ORDER BY` clause. |
| abstract boolean | [supportsOuterJoins](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsOuterJoins())() Retrieves whether this database supports some form of outer join. |
| abstract boolean | [supportsPositionedDelete](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsPositionedDelete())() Retrieves whether this database supports positioned `DELETE` statements. |
| abstract boolean | [supportsPositionedUpdate](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsPositionedUpdate())() Retrieves whether this database supports positioned `UPDATE` statements. |
| abstract boolean | [supportsResultSetConcurrency](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsResultSetConcurrency(int,%20int))(int type, int concurrency) Retrieves whether this database supports the given concurrency type in combination with the given result set type. |
| abstract boolean | [supportsResultSetHoldability](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsResultSetHoldability(int))(int holdability) Retrieves whether this database supports the given result set holdability. |
| abstract boolean | [supportsResultSetType](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsResultSetType(int))(int type) Retrieves whether this database supports the given result set type. |
| abstract boolean | [supportsSavepoints](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSavepoints())() Retrieves whether this database supports savepoints. |
| abstract boolean | [supportsSchemasInDataManipulation](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSchemasInDataManipulation())() Retrieves whether a schema name can be used in a data manipulation statement. |
| abstract boolean | [supportsSchemasInIndexDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSchemasInIndexDefinitions())() Retrieves whether a schema name can be used in an index definition statement. |
| abstract boolean | [supportsSchemasInPrivilegeDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSchemasInPrivilegeDefinitions())() Retrieves whether a schema name can be used in a privilege definition statement. |
| abstract boolean | [supportsSchemasInProcedureCalls](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSchemasInProcedureCalls())() Retrieves whether a schema name can be used in a procedure call statement. |
| abstract boolean | [supportsSchemasInTableDefinitions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSchemasInTableDefinitions())() Retrieves whether a schema name can be used in a table definition statement. |
| abstract boolean | [supportsSelectForUpdate](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSelectForUpdate())() Retrieves whether this database supports `SELECT FOR UPDATE` statements. |
| abstract boolean | [supportsStatementPooling](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsStatementPooling())() Retrieves whether this database supports statement pooling. |
| abstract boolean | [supportsStoredFunctionsUsingCallSyntax](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsStoredFunctionsUsingCallSyntax())() Retrieves whether this database supports invoking user-defined or vendor functions using the stored procedure escape syntax. |
| abstract boolean | [supportsStoredProcedures](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsStoredProcedures())() Retrieves whether this database supports stored procedure calls that use the stored procedure escape syntax. |
| abstract boolean | [supportsSubqueriesInComparisons](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSubqueriesInComparisons())() Retrieves whether this database supports subqueries in comparison expressions. |
| abstract boolean | [supportsSubqueriesInExists](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSubqueriesInExists())() Retrieves whether this database supports subqueries in `EXISTS` expressions. |
| abstract boolean | [supportsSubqueriesInIns](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSubqueriesInIns())() Retrieves whether this database supports subqueries in `IN` expressions. |
| abstract boolean | [supportsSubqueriesInQuantifieds](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsSubqueriesInQuantifieds())() Retrieves whether this database supports subqueries in quantified expressions. |
| abstract boolean | [supportsTableCorrelationNames](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsTableCorrelationNames())() Retrieves whether this database supports table correlation names. |
| abstract boolean | [supportsTransactionIsolationLevel](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsTransactionIsolationLevel(int))(int level) Retrieves whether this database supports the given transaction isolation level. |
| abstract boolean | [supportsTransactions](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsTransactions())() Retrieves whether this database supports transactions. |
| abstract boolean | [supportsUnion](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsUnion())() Retrieves whether this database supports SQL `UNION`. |
| abstract boolean | [supportsUnionAll](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#supportsUnionAll())() Retrieves whether this database supports SQL `UNION ALL`. |
| abstract boolean | [updatesAreDetected](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#updatesAreDetected(int))(int type) Retrieves whether or not a visible row update can be detected by calling the method `ResultSet.rowUpdated`. |
| abstract boolean | [usesLocalFilePerTable](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#usesLocalFilePerTable())() Retrieves whether this database uses a file for each table. |
| abstract boolean | [usesLocalFiles](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#usesLocalFiles())() Retrieves whether this database stores tables in a local file. |

### Inherited Method Summary

From interface [java.sql.Wrapper](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Wrapper.html)

|---|---|
| abstract boolean | [isWrapperFor](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Wrapper.html#isWrapperFor(java.lang.Class<?>))([Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<?\> iface) Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. |
| abstract \<T\> T | [unwrap](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Wrapper.html#unwrap(java.lang.Class<T>))([Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<T\> iface) Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. |

## Constants

#### public static final short
**attributeNoNulls**

Indicates that `NULL` values might not be allowed.


A possible value for the column
`NULLABLE` in the `ResultSet` object
returned by the method `getAttributes`.
Constant Value: 0

#### public static final short
**attributeNullable**

Indicates that `NULL` values are definitely allowed.


A possible value for the column `NULLABLE`
in the `ResultSet` object
returned by the method `getAttributes`.
Constant Value: 1

#### public static final short
**attributeNullableUnknown**

Indicates that whether `NULL` values are allowed is not
known.


A possible value for the column `NULLABLE`
in the `ResultSet` object
returned by the method `getAttributes`.
Constant Value: 2

#### public static final int
**bestRowNotPseudo**

Indicates that the best row identifier is NOT a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 1

#### public static final int
**bestRowPseudo**

Indicates that the best row identifier is a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 2

#### public static final int
**bestRowSession**

Indicates that the scope of the best row identifier is
the remainder of the current session.


A possible value for the column
`SCOPE`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 2

#### public static final int
**bestRowTemporary**

Indicates that the scope of the best row identifier is
very temporary, lasting only while the
row is being used.


A possible value for the column
`SCOPE`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 0

#### public static final int
**bestRowTransaction**

Indicates that the scope of the best row identifier is
the remainder of the current transaction.


A possible value for the column
`SCOPE`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 1

#### public static final int
**bestRowUnknown**

Indicates that the best row identifier may or may not be a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getBestRowIdentifier`.
Constant Value: 0

#### public static final int
**columnNoNulls**

Indicates that the column might not allow `NULL` values.


A possible value for the column
`NULLABLE`
in the `ResultSet` returned by the method
`getColumns`.
Constant Value: 0

#### public static final int
**columnNullable**

Indicates that the column definitely allows `NULL` values.


A possible value for the column
`NULLABLE`
in the `ResultSet` returned by the method
`getColumns`.
Constant Value: 1

#### public static final int
**columnNullableUnknown**

Indicates that the nullability of columns is unknown.


A possible value for the column
`NULLABLE`
in the `ResultSet` returned by the method
`getColumns`.
Constant Value: 2

#### public static final int
**functionColumnIn**

Indicates that the parameter or column is an IN parameter.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 1

#### public static final int
**functionColumnInOut**

Indicates that the parameter or column is an INOUT parameter.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 2

#### public static final int
**functionColumnOut**

Indicates that the parameter or column is an OUT parameter.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 3

#### public static final int
**functionColumnResult**

Indicates that the parameter or column is a column in a result set.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 5

#### public static final int
**functionColumnUnknown**

Indicates that type of the parameter or column is unknown.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 0

#### public static final int
**functionNoNulls**

Indicates that `NULL` values are not allowed.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getFunctionColumns`.
Constant Value: 0

#### public static final int
**functionNoTable**

Indicates that the function does not return a table.


A possible value for column `FUNCTION_TYPE` in the
`ResultSet` object returned by the method
`getFunctions`.
Constant Value: 1

#### public static final int
**functionNullable**

Indicates that `NULL` values are allowed.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getFunctionColumns`.
Constant Value: 1

#### public static final int
**functionNullableUnknown**

Indicates that whether `NULL` values are allowed
is unknown.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getFunctionColumns`.
Constant Value: 2

#### public static final int
**functionResultUnknown**

Indicates that it is not known whether the function returns
a result or a table.


A possible value for column `FUNCTION_TYPE` in the
`ResultSet` object returned by the method
`getFunctions`.
Constant Value: 0

#### public static final int
**functionReturn**

Indicates that the parameter or column is a return value.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getFunctionColumns`.
Constant Value: 4

#### public static final int
**functionReturnsTable**

Indicates that the function returns a table.


A possible value for column `FUNCTION_TYPE` in the
`ResultSet` object returned by the method
`getFunctions`.
Constant Value: 2

#### public static final int
**importedKeyCascade**

For the column `UPDATE_RULE`,
indicates that
when the primary key is updated, the foreign key (imported key)
is changed to agree with it.
For the column `DELETE_RULE`,
it indicates that
when the primary key is deleted, rows that imported that key
are deleted.


A possible value for the columns `UPDATE_RULE`
and `DELETE_RULE` in the
`ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 0

#### public static final int
**importedKeyInitiallyDeferred**

Indicates deferrability. See SQL-92 for a definition.


A possible value for the column `DEFERRABILITY`
in the `ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 5

#### public static final int
**importedKeyInitiallyImmediate**

Indicates deferrability. See SQL-92 for a definition.


A possible value for the column `DEFERRABILITY`
in the `ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 6

#### public static final int
**importedKeyNoAction**

For the columns `UPDATE_RULE`
and `DELETE_RULE`, indicates that
if the primary key has been imported, it cannot be updated or deleted.


A possible value for the columns `UPDATE_RULE`
and `DELETE_RULE` in the
`ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 3

#### public static final int
**importedKeyNotDeferrable**

Indicates deferrability. See SQL-92 for a definition.


A possible value for the column `DEFERRABILITY`
in the `ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 7

#### public static final int
**importedKeyRestrict**

For the column `UPDATE_RULE`, indicates that
a primary key may not be updated if it has been imported by
another table as a foreign key.
For the column `DELETE_RULE`, indicates that
a primary key may not be deleted if it has been imported by
another table as a foreign key.


A possible value for the columns `UPDATE_RULE`
and `DELETE_RULE` in the
`ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 1

#### public static final int
**importedKeySetDefault**

For the columns `UPDATE_RULE`
and `DELETE_RULE`, indicates that
if the primary key is updated or deleted, the foreign key (imported key)
is set to the default value.


A possible value for the columns `UPDATE_RULE`
and `DELETE_RULE` in the
`ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 4

#### public static final int
**importedKeySetNull**

For the columns `UPDATE_RULE`
and `DELETE_RULE`, indicates that
when the primary key is updated or deleted, the foreign key (imported key)
is changed to `NULL`.


A possible value for the columns `UPDATE_RULE`
and `DELETE_RULE` in the
`ResultSet` objects returned by the methods
`getImportedKeys`, `getExportedKeys`,
and `getCrossReference`.
Constant Value: 2

#### public static final int
**procedureColumnIn**

Indicates that the column stores IN parameters.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 1

#### public static final int
**procedureColumnInOut**

Indicates that the column stores INOUT parameters.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 2

#### public static final int
**procedureColumnOut**

Indicates that the column stores OUT parameters.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 4

#### public static final int
**procedureColumnResult**

Indicates that the column stores results.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 3

#### public static final int
**procedureColumnReturn**

Indicates that the column stores return values.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 5

#### public static final int
**procedureColumnUnknown**

Indicates that type of the column is unknown.


A possible value for the column
`COLUMN_TYPE`
in the `ResultSet`
returned by the method `getProcedureColumns`.
Constant Value: 0

#### public static final int
**procedureNoNulls**

Indicates that `NULL` values are not allowed.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getProcedureColumns`.
Constant Value: 0

#### public static final int
**procedureNoResult**

Indicates that the procedure does not return a result.


A possible value for column `PROCEDURE_TYPE` in the
`ResultSet` object returned by the method
`getProcedures`.
Constant Value: 1

#### public static final int
**procedureNullable**

Indicates that `NULL` values are allowed.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getProcedureColumns`.
Constant Value: 1

#### public static final int
**procedureNullableUnknown**

Indicates that whether `NULL` values are allowed
is unknown.


A possible value for the column
`NULLABLE`
in the `ResultSet` object
returned by the method `getProcedureColumns`.
Constant Value: 2

#### public static final int
**procedureResultUnknown**

Indicates that it is not known whether the procedure returns
a result.


A possible value for column `PROCEDURE_TYPE` in the
`ResultSet` object returned by the method
`getProcedures`.
Constant Value: 0

#### public static final int
**procedureReturnsResult**

Indicates that the procedure returns a result.


A possible value for column `PROCEDURE_TYPE` in the
`ResultSet` object returned by the method
`getProcedures`.
Constant Value: 2

#### public static final int
**sqlStateSQL**

A possible return value for the method
`DatabaseMetaData.getSQLStateType` which is used to indicate
whether the value returned by the method
`SQLException.getSQLState` is an SQLSTATE value.

<br />

Constant Value: 2

#### public static final int
**sqlStateSQL99**

A possible return value for the method
`DatabaseMetaData.getSQLStateType` which is used to indicate
whether the value returned by the method
`SQLException.getSQLState` is an SQL99 SQLSTATE value.


**Note:** This constant remains only for compatibility reasons. Developers
should use the constant `sqlStateSQL` instead.
Constant Value: 2

#### public static final int
**sqlStateXOpen**

A possible return value for the method
`DatabaseMetaData.getSQLStateType` which is used to indicate
whether the value returned by the method
`SQLException.getSQLState` is an
X/Open (now know as Open Group) SQL CLI SQLSTATE value.

<br />

Constant Value: 1

#### public static final short
**tableIndexClustered**

Indicates that this table index is a clustered index.


A possible value for column `TYPE` in the
`ResultSet` object returned by the method
`getIndexInfo`.
Constant Value: 1

#### public static final short
**tableIndexHashed**

Indicates that this table index is a hashed index.


A possible value for column `TYPE` in the
`ResultSet` object returned by the method
`getIndexInfo`.
Constant Value: 2

#### public static final short
**tableIndexOther**

Indicates that this table index is not a clustered
index, a hashed index, or table statistics;
it is something other than these.


A possible value for column `TYPE` in the
`ResultSet` object returned by the method
`getIndexInfo`.
Constant Value: 3

#### public static final short
**tableIndexStatistic**

Indicates that this column contains table statistics that
are returned in conjunction with a table's index descriptions.


A possible value for column `TYPE` in the
`ResultSet` object returned by the method
`getIndexInfo`.
Constant Value: 0

#### public static final int
**typeNoNulls**

Indicates that a `NULL` value is NOT allowed for this
data type.


A possible value for column `NULLABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 0

#### public static final int
**typeNullable**

Indicates that a `NULL` value is allowed for this
data type.


A possible value for column `NULLABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 1

#### public static final int
**typeNullableUnknown**

Indicates that it is not known whether a `NULL` value
is allowed for this data type.


A possible value for column `NULLABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 2

#### public static final int
**typePredBasic**

Indicates that the data type can be only be used in `WHERE`
search clauses
that do not use `LIKE` predicates.


A possible value for column `SEARCHABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 2

#### public static final int
**typePredChar**

Indicates that the data type
can be only be used in `WHERE` search clauses
that use `LIKE` predicates.


A possible value for column `SEARCHABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 1

#### public static final int
**typePredNone**

Indicates that `WHERE` search clauses are not supported
for this type.


A possible value for column `SEARCHABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 0

#### public static final int
**typeSearchable**

Indicates that all `WHERE` search clauses can be
based on this type.


A possible value for column `SEARCHABLE` in the
`ResultSet` object returned by the method
`getTypeInfo`.
Constant Value: 3

#### public static final int
**versionColumnNotPseudo**

Indicates that this version column is NOT a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getVersionColumns`.
Constant Value: 1

#### public static final int
**versionColumnPseudo**

Indicates that this version column is a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getVersionColumns`.
Constant Value: 2

#### public static final int
**versionColumnUnknown**

Indicates that this version column may or may not be a pseudo column.


A possible value for the column
`PSEUDO_COLUMN`
in the `ResultSet` object
returned by the method `getVersionColumns`.
Constant Value: 0

## Public Methods

#### public abstract boolean
**allProceduresAreCallable**
()

Retrieves whether the current user can call all the procedures
returned by the method `getProcedures`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**allTablesAreSelectable**
()

Retrieves whether the current user can use all the tables returned
by the method `getTables` in a `SELECT`
statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**autoCommitFailureClosesAllResultSets**
()

Retrieves whether a `SQLException` while autoCommit is `true` inidcates
that all open ResultSets are closed, even ones that are holdable. When a `SQLException` occurs while
autocommit is `true`, it is vendor specific whether the JDBC driver responds with a commit operation, a
rollback operation, or by doing neither a commit nor a rollback. A potential result of this difference
is in whether or not holdable ResultSets are closed.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**dataDefinitionCausesTransactionCommit**
()

Retrieves whether a data definition statement within a transaction forces
the transaction to commit.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**dataDefinitionIgnoredInTransactions**
()

Retrieves whether this database ignores a data definition statement
within a transaction.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**deletesAreDetected**
(int type)

Retrieves whether or not a visible row delete can be detected by
calling the method `ResultSet.rowDeleted`. If the method
`deletesAreDetected` returns `false`, it means that
deleted rows are removed from the result set.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if deletes are detected by the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**doesMaxRowSizeIncludeBlobs**
()

Retrieves whether the return value for the method
`getMaxRowSize` includes the SQL data types
`LONGVARCHAR` and `LONGVARBINARY`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getAttributes**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) attributeNamePattern)

Retrieves a description of the given attribute of the given type
for a user-defined type (UDT) that is available in the given schema
and catalog.


Descriptions are returned only for attributes of UDTs matching the
catalog, schema, type, and attribute name criteria. They are ordered by
`TYPE_CAT`, `TYPE_SCHEM`,
`TYPE_NAME` and `ORDINAL_POSITION`. This description
does not contain inherited attributes.


The `ResultSet` object that is returned has the following
columns:

1. **TYPE_CAT** String =\> type catalog (may be `null`)
2. **TYPE_SCHEM** String =\> type schema (may be `null`)
3. **TYPE_NAME** String =\> type name
4. **ATTR_NAME** String =\> attribute name
5. **DATA_TYPE** int =\> attribute type SQL type from java.sql.Types
6. **ATTR_TYPE_NAME** String =\> Data source dependent type name. For a UDT, the type name is fully qualified. For a REF, the type name is fully qualified and represents the target type of the reference type.
7. **ATTR_SIZE** int =\> column size. For char or date types this is the maximum number of characters; for numeric or decimal types this is precision.
8. **DECIMAL_DIGITS** int =\> the number of fractional digits. Null is returned for data types where DECIMAL_DIGITS is not applicable.
9. **NUM_PREC_RADIX** int =\> Radix (typically either 10 or 2)
10. **NULLABLE** int =\> whether NULL is allowed
    - attributeNoNulls - might not allow NULL values
    - attributeNullable - definitely allows NULL values
    - attributeNullableUnknown - nullability unknown
11. **REMARKS** String =\> comment describing column (may be `null`)
12. **ATTR_DEF** String =\> default value (may be `null`)
13. **SQL_DATA_TYPE** int =\> unused
14. **SQL_DATETIME_SUB** int =\> unused
15. **CHAR_OCTET_LENGTH** int =\> for char types the maximum number of bytes in the column
16. **ORDINAL_POSITION** int =\> index of the attribute in the UDT (starting at 1)
17. **IS_NULLABLE** String =\> ISO rules are used to determine the nullability for a attribute.
    - YES --- if the attribute can include NULLs
    - NO --- if the attribute cannot include NULLs
    - empty string --- if the nullability for the attribute is unknown
18. **SCOPE_CATALOG** String =\> catalog of table that is the scope of a reference attribute (`null` if DATA_TYPE isn't REF)
19. **SCOPE_SCHEMA** String =\> schema of table that is the scope of a reference attribute (`null` if DATA_TYPE isn't REF)
20. **SCOPE_TABLE** String =\> table name that is the scope of a reference attribute (`null` if the DATA_TYPE isn't REF)
21. **SOURCE_DATA_TYPE** short =\> source type of a distinct type or user-generated Ref type,SQL type from java.sql.Types (`null` if DATA_TYPE isn't DISTINCT or user-generated REF)

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| typeNamePattern | a type name pattern; must match the type name as it is stored in the database |
| attributeNamePattern | an attribute name pattern; must match the attribute name as it is declared in the database |
|---|---|

##### Returns

- a `ResultSet` object in which each row is an attribute description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getBestRowIdentifier**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, int scope, boolean nullable)

Retrieves a description of a table's optimal set of columns that
uniquely identifies a row. They are ordered by SCOPE.

Each column description has the following columns:

1. **SCOPE** short =\> actual scope of result
   - bestRowTemporary - very temporary, while using row
   - bestRowTransaction - valid for remainder of current transaction
   - bestRowSession - valid for remainder of current session
2. **COLUMN_NAME** String =\> column name
3. **DATA_TYPE** int =\> SQL data type from java.sql.Types
4. **TYPE_NAME** String =\> Data source dependent type name, for a UDT the type name is fully qualified
5. **COLUMN_SIZE** int =\> precision
6. **BUFFER_LENGTH** int =\> not used
7. **DECIMAL_DIGITS** short =\> scale - Null is returned for data types where DECIMAL_DIGITS is not applicable.
8. **PSEUDO_COLUMN** short =\> is this a pseudo column like an Oracle ROWID
   - bestRowUnknown - may or may not be pseudo column
   - bestRowNotPseudo - is NOT a pseudo column
   - bestRowPseudo - is a pseudo column

The COLUMN_SIZE column represents the specified column size for the given column.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in the database |
| scope | the scope of interest; use same values as SCOPE |
| nullable | include columns that are nullable. |
|---|---|

##### Returns

- `ResultSet` - each row is a column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getCatalogSeparator**
()

Retrieves the `String` that this database uses as the
separator between a catalog and table name.

##### Returns

- the separator string

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getCatalogTerm**
()

Retrieves the database vendor's preferred term for "catalog".

##### Returns

- the vendor term for "catalog"

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getCatalogs**
()

Retrieves the catalog names available in this database. The results
are ordered by catalog name.

The catalog column is:

1. **TABLE_CAT** String =\> catalog name

<br />

##### Returns

- a `ResultSet` object in which each row has a single `String` column that is a catalog name

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getClientInfoProperties**
()

Retrieves a list of the client info properties
that the driver supports. The result set contains the following columns


1. **NAME** String=\> The name of the client info property  
2. **MAX_LEN** int=\> The maximum length of the value for the property  
3. **DEFAULT_VALUE** String=\> The default value of the property  
4. **DESCRIPTION** String=\> A description of the property. This will typically contain information as to where this property is stored in the database.


The `ResultSet` is sorted by the NAME column

<br />

##### Returns

- A `ResultSet` object; each row is a supported client info property

  <br />

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs <br /> |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getColumnPrivileges**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern)

Retrieves a description of the access rights for a table's columns.

Only privileges matching the column name criteria are
returned. They are ordered by COLUMN_NAME and PRIVILEGE.

Each privilige description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **COLUMN_NAME** String =\> column name
5. **GRANTOR** String =\> grantor of access (may be `null`)
6. **GRANTEE** String =\> grantee of access
7. **PRIVILEGE** String =\> name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
8. **IS_GRANTABLE** String =\> "YES" if grantee is permitted to grant to others; "NO" if not; `null` if unknown

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in the database |
| columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a column privilege description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getColumns**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern)

Retrieves a description of table columns available in
the specified catalog.

Only column descriptions matching the catalog, schema, table
and column name criteria are returned. They are ordered by
`TABLE_CAT`,`TABLE_SCHEM`,
`TABLE_NAME`, and `ORDINAL_POSITION`.

Each column description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **COLUMN_NAME** String =\> column name
5. **DATA_TYPE** int =\> SQL type from java.sql.Types
6. **TYPE_NAME** String =\> Data source dependent type name, for a UDT the type name is fully qualified
7. **COLUMN_SIZE** int =\> column size.
8. **BUFFER_LENGTH** is not used.
9. **DECIMAL_DIGITS** int =\> the number of fractional digits. Null is returned for data types where DECIMAL_DIGITS is not applicable.
10. **NUM_PREC_RADIX** int =\> Radix (typically either 10 or 2)
11. **NULLABLE** int =\> is NULL allowed.
    - columnNoNulls - might not allow `NULL` values
    - columnNullable - definitely allows `NULL` values
    - columnNullableUnknown - nullability unknown
12. **REMARKS** String =\> comment describing column (may be `null`)
13. **COLUMN_DEF** String =\> default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be `null`)
14. **SQL_DATA_TYPE** int =\> unused
15. **SQL_DATETIME_SUB** int =\> unused
16. **CHAR_OCTET_LENGTH** int =\> for char types the maximum number of bytes in the column
17. **ORDINAL_POSITION** int =\> index of column in table (starting at 1)
18. **IS_NULLABLE** String =\> ISO rules are used to determine the nullability for a column.
    - YES --- if the column can include NULLs
    - NO --- if the column cannot include NULLs
    - empty string --- if the nullability for the column is unknown
19. **SCOPE_CATALOG** String =\> catalog of table that is the scope of a reference attribute (`null` if DATA_TYPE isn't REF)
20. **SCOPE_SCHEMA** String =\> schema of table that is the scope of a reference attribute (`null` if the DATA_TYPE isn't REF)
21. **SCOPE_TABLE** String =\> table name that this the scope of a reference attribute (`null` if the DATA_TYPE isn't REF)
22. **SOURCE_DATA_TYPE** short =\> source type of a distinct type or user-generated Ref type, SQL type from java.sql.Types (`null` if DATA_TYPE isn't DISTINCT or user-generated REF)
23. **IS_AUTOINCREMENT** String =\> Indicates whether this column is auto incremented
    - YES --- if the column is auto incremented
    - NO --- if the column is not auto incremented
    - empty string --- if it cannot be determined whether the column is auto incremented
24. **IS_GENERATEDCOLUMN** String =\> Indicates whether this is a generated column
    - YES --- if this a generated column
    - NO --- if this not a generated column
    - empty string --- if it cannot be determined whether this is a generated column

The COLUMN_SIZE column specifies the column size for the given column.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
| columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [Connection](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html)
**getConnection**
()

Retrieves the connection that produced this metadata object.

<br />

##### Returns

- the connection that produced this metadata object

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getCrossReference**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentCatalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentSchema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) parentTable, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignCatalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignSchema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) foreignTable)

Retrieves a description of the foreign key columns in the given foreign key
table that reference the primary key or the columns representing a unique constraint of the parent table (could be the same or a different table).
The number of columns returned from the parent table must match the number of
columns that make up the foreign key. They
are ordered by FKTABLE_CAT, FKTABLE_SCHEM, FKTABLE_NAME, and
KEY_SEQ.

Each foreign key column description has the following columns:

1. **PKTABLE_CAT** String =\> parent key table catalog (may be `null`)
2. **PKTABLE_SCHEM** String =\> parent key table schema (may be `null`)
3. **PKTABLE_NAME** String =\> parent key table name
4. **PKCOLUMN_NAME** String =\> parent key column name
5. **FKTABLE_CAT** String =\> foreign key table catalog (may be `null`) being exported (may be `null`)
6. **FKTABLE_SCHEM** String =\> foreign key table schema (may be `null`) being exported (may be `null`)
7. **FKTABLE_NAME** String =\> foreign key table name being exported
8. **FKCOLUMN_NAME** String =\> foreign key column name being exported
9. **KEY_SEQ** short =\> sequence number within foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
10. **UPDATE_RULE** short =\> What happens to foreign key when parent key is updated:
    - importedNoAction - do not allow update of parent key if it has been imported
    - importedKeyCascade - change imported key to agree with parent key update
    - importedKeySetNull - change imported key to `NULL` if its parent key has been updated
    - importedKeySetDefault - change imported key to default values if its parent key has been updated
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
11. **DELETE_RULE** short =\> What happens to the foreign key when parent key is deleted.
    - importedKeyNoAction - do not allow delete of parent key if it has been imported
    - importedKeyCascade - delete rows that import a deleted key
    - importedKeySetNull - change imported key to `NULL` if its primary key has been deleted
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    - importedKeySetDefault - change imported key to default if its parent key has been deleted
12. **FK_NAME** String =\> foreign key name (may be `null`)
13. **PK_NAME** String =\> parent key name (may be `null`)
14. **DEFERRABILITY** short =\> can the evaluation of foreign key constraints be deferred until commit
    - importedKeyInitiallyDeferred - see SQL92 for definition
    - importedKeyInitiallyImmediate - see SQL92 for definition
    - importedKeyNotDeferrable - see SQL92 for definition

<br />

##### Parameters

| parentCatalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means drop catalog name from the selection criteria |
| parentSchema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means drop schema name from the selection criteria |
| parentTable | the name of the table that exports the key; must match the table name as it is stored in the database |
| foreignCatalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means drop catalog name from the selection criteria |
| foreignSchema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means drop schema name from the selection criteria |
| foreignTable | the name of the table that imports the key; must match the table name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a foreign key column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getImportedKeys(java.lang.String,%20java.lang.String,%20java.lang.String)`

#### public abstract int
**getDatabaseMajorVersion**
()

Retrieves the major version number of the underlying database.

##### Returns

- the underlying database's major version

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getDatabaseMinorVersion**
()

Retrieves the minor version number of the underlying database.

##### Returns

- underlying database's minor version

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getDatabaseProductName**
()

Retrieves the name of this database product.

##### Returns

- database product name

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getDatabaseProductVersion**
()

Retrieves the version number of this database product.

##### Returns

- database version number

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getDefaultTransactionIsolation**
()

Retrieves this database's default transaction isolation level. The
possible values are defined in `java.sql.Connection`.

##### Returns

- the default isolation level

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html`

#### public abstract int
**getDriverMajorVersion**
()

Retrieves this JDBC driver's major version number.

##### Returns

- JDBC driver major version

#### public abstract int
**getDriverMinorVersion**
()

Retrieves this JDBC driver's minor version number.

##### Returns

- JDBC driver minor version number

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getDriverName**
()

Retrieves the name of this JDBC driver.

##### Returns

- JDBC driver name

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getDriverVersion**
()

Retrieves the version number of this JDBC driver as a `String`.

##### Returns

- JDBC driver version

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getExportedKeys**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table)

Retrieves a description of the foreign key columns that reference the
given table's primary key columns (the foreign keys exported by a
table). They are ordered by FKTABLE_CAT, FKTABLE_SCHEM,
FKTABLE_NAME, and KEY_SEQ.

Each foreign key column description has the following columns:

1. **PKTABLE_CAT** String =\> primary key table catalog (may be `null`)
2. **PKTABLE_SCHEM** String =\> primary key table schema (may be `null`)
3. **PKTABLE_NAME** String =\> primary key table name
4. **PKCOLUMN_NAME** String =\> primary key column name
5. **FKTABLE_CAT** String =\> foreign key table catalog (may be `null`) being exported (may be `null`)
6. **FKTABLE_SCHEM** String =\> foreign key table schema (may be `null`) being exported (may be `null`)
7. **FKTABLE_NAME** String =\> foreign key table name being exported
8. **FKCOLUMN_NAME** String =\> foreign key column name being exported
9. **KEY_SEQ** short =\> sequence number within foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
10. **UPDATE_RULE** short =\> What happens to foreign key when primary is updated:
    - importedNoAction - do not allow update of primary key if it has been imported
    - importedKeyCascade - change imported key to agree with primary key update
    - importedKeySetNull - change imported key to `NULL` if its primary key has been updated
    - importedKeySetDefault - change imported key to default values if its primary key has been updated
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
11. **DELETE_RULE** short =\> What happens to the foreign key when primary is deleted.
    - importedKeyNoAction - do not allow delete of primary key if it has been imported
    - importedKeyCascade - delete rows that import a deleted key
    - importedKeySetNull - change imported key to `NULL` if its primary key has been deleted
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    - importedKeySetDefault - change imported key to default if its primary key has been deleted
12. **FK_NAME** String =\> foreign key name (may be `null`)
13. **PK_NAME** String =\> primary key name (may be `null`)
14. **DEFERRABILITY** short =\> can the evaluation of foreign key constraints be deferred until commit
    - importedKeyInitiallyDeferred - see SQL92 for definition
    - importedKeyInitiallyImmediate - see SQL92 for definition
    - importedKeyNotDeferrable - see SQL92 for definition

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in this database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in this database |
|---|---|

##### Returns

- a `ResultSet` object in which each row is a foreign key column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getImportedKeys(java.lang.String,%20java.lang.String,%20java.lang.String)`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getExtraNameCharacters**
()

Retrieves all the "extra" characters that can be used in unquoted
identifier names (those beyond a-z, A-Z, 0-9 and _).

##### Returns

- the string containing the extra characters

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getFunctionColumns**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) functionNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern)

Retrieves a description of the given catalog's system or user
function parameters and return type.

Only descriptions matching the schema, function and
parameter name criteria are returned. They are ordered by
`FUNCTION_CAT`, `FUNCTION_SCHEM`,
`FUNCTION_NAME` and
`SPECIFIC_ NAME`. Within this, the return value,
if any, is first. Next are the parameter descriptions in call
order. The column descriptions follow in column number order.

Each row in the `ResultSet`
is a parameter description, column description or
return type description with the following fields:

1. **FUNCTION_CAT** String =\> function catalog (may be `null`)
2. **FUNCTION_SCHEM** String =\> function schema (may be `null`)
3. **FUNCTION_NAME** String =\> function name. This is the name used to invoke the function
4. **COLUMN_NAME** String =\> column/parameter name
5. **COLUMN_TYPE** Short =\> kind of column/parameter:
   - functionColumnUnknown - nobody knows
   - functionColumnIn - IN parameter
   - functionColumnInOut - INOUT parameter
   - functionColumnOut - OUT parameter
   - functionColumnReturn - function return value
   - functionColumnResult - Indicates that the parameter or column is a column in the `ResultSet`
6. **DATA_TYPE** int =\> SQL type from java.sql.Types
7. **TYPE_NAME** String =\> SQL type name, for a UDT type the type name is fully qualified
8. **PRECISION** int =\> precision
9. **LENGTH** int =\> length in bytes of data
10. **SCALE** short =\> scale - null is returned for data types where SCALE is not applicable.
11. **RADIX** short =\> radix
12. **NULLABLE** short =\> can it contain NULL.
    - functionNoNulls - does not allow NULL values
    - functionNullable - allows NULL values
    - functionNullableUnknown - nullability unknown
13. **REMARKS** String =\> comment describing column/parameter
14. **CHAR_OCTET_LENGTH** int =\> the maximum length of binary and character based parameters or columns. For any other datatype the returned value is a NULL
15. **ORDINAL_POSITION** int =\> the ordinal position, starting from 1, for the input and output parameters. A value of 0 is returned if this row describes the function's return value. For result set columns, it is the ordinal position of the column in the result set starting from 1.
16. **IS_NULLABLE** String =\> ISO rules are used to determine the nullability for a parameter or column.
    - YES --- if the parameter or column can include NULLs
    - NO --- if the parameter or column cannot include NULLs
    - empty string --- if the nullability for the parameter or column is unknown
17. **SPECIFIC_NAME** String =\> the name which uniquely identifies this function within its schema. This is a user specified, or DBMS generated, name that may be different then the `FUNCTION_NAME` for example with overload functions

The PRECISION column represents the specified column size for the given
parameter or column.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| functionNamePattern | a procedure name pattern; must match the function name as it is stored in the database |
| columnNamePattern | a parameter name pattern; must match the parameter or column name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row describes a user function parameter, column or return type

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getFunctions**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) functionNamePattern)

Retrieves a description of the system and user functions available
in the given catalog.


Only system and user function descriptions matching the schema and
function name criteria are returned. They are ordered by
`FUNCTION_CAT`, `FUNCTION_SCHEM`,
`FUNCTION_NAME` and
`SPECIFIC_ NAME`.

Each function description has the the following columns:

1. **FUNCTION_CAT** String =\> function catalog (may be `null`)
2. **FUNCTION_SCHEM** String =\> function schema (may be `null`)
3. **FUNCTION_NAME** String =\> function name. This is the name used to invoke the function
4. **REMARKS** String =\> explanatory comment on the function
5. **FUNCTION_TYPE** short =\> kind of function:
   - functionResultUnknown - Cannot determine if a return value or table will be returned
   - functionNoTable- Does not return a table
   - functionReturnsTable - Returns a table
6. **SPECIFIC_NAME** String =\> the name which uniquely identifies this function within its schema. This is a user specified, or DBMS generated, name that may be different then the `FUNCTION_NAME` for example with overload functions


A user may not have permission to execute any of the functions that are
returned by `getFunctions`

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| functionNamePattern | a function name pattern; must match the function name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a function description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getIdentifierQuoteString**
()

Retrieves the string used to quote SQL identifiers.
This method returns a space " " if identifier quoting is not supported.

##### Returns

- the quoting string or a space if quoting is not supported

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getImportedKeys**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table)

Retrieves a description of the primary key columns that are
referenced by the given table's foreign key columns (the primary keys
imported by a table). They are ordered by PKTABLE_CAT,
PKTABLE_SCHEM, PKTABLE_NAME, and KEY_SEQ.

Each primary key column description has the following columns:

1. **PKTABLE_CAT** String =\> primary key table catalog being imported (may be `null`)
2. **PKTABLE_SCHEM** String =\> primary key table schema being imported (may be `null`)
3. **PKTABLE_NAME** String =\> primary key table name being imported
4. **PKCOLUMN_NAME** String =\> primary key column name being imported
5. **FKTABLE_CAT** String =\> foreign key table catalog (may be `null`)
6. **FKTABLE_SCHEM** String =\> foreign key table schema (may be `null`)
7. **FKTABLE_NAME** String =\> foreign key table name
8. **FKCOLUMN_NAME** String =\> foreign key column name
9. **KEY_SEQ** short =\> sequence number within a foreign key( a value of 1 represents the first column of the foreign key, a value of 2 would represent the second column within the foreign key).
10. **UPDATE_RULE** short =\> What happens to a foreign key when the primary key is updated:
    - importedNoAction - do not allow update of primary key if it has been imported
    - importedKeyCascade - change imported key to agree with primary key update
    - importedKeySetNull - change imported key to `NULL` if its primary key has been updated
    - importedKeySetDefault - change imported key to default values if its primary key has been updated
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
11. **DELETE_RULE** short =\> What happens to the foreign key when primary is deleted.
    - importedKeyNoAction - do not allow delete of primary key if it has been imported
    - importedKeyCascade - delete rows that import a deleted key
    - importedKeySetNull - change imported key to NULL if its primary key has been deleted
    - importedKeyRestrict - same as importedKeyNoAction (for ODBC 2.x compatibility)
    - importedKeySetDefault - change imported key to default if its primary key has been deleted
12. **FK_NAME** String =\> foreign key name (may be `null`)
13. **PK_NAME** String =\> primary key name (may be `null`)
14. **DEFERRABILITY** short =\> can the evaluation of foreign key constraints be deferred until commit
    - importedKeyInitiallyDeferred - see SQL92 for definition
    - importedKeyInitiallyImmediate - see SQL92 for definition
    - importedKeyNotDeferrable - see SQL92 for definition

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a primary key column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getExportedKeys(java.lang.String,%20java.lang.String,%20java.lang.String)`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getIndexInfo**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table, boolean unique, boolean approximate)

Retrieves a description of the given table's indices and statistics. They are
ordered by NON_UNIQUE, TYPE, INDEX_NAME, and ORDINAL_POSITION.

Each index column description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **NON_UNIQUE** boolean =\> Can index values be non-unique. false when TYPE is tableIndexStatistic
5. **INDEX_QUALIFIER** String =\> index catalog (may be `null`); `null` when TYPE is tableIndexStatistic
6. **INDEX_NAME** String =\> index name; `null` when TYPE is tableIndexStatistic
7. **TYPE** short =\> index type:
   - tableIndexStatistic - this identifies table statistics that are returned in conjuction with a table's index descriptions
   - tableIndexClustered - this is a clustered index
   - tableIndexHashed - this is a hashed index
   - tableIndexOther - this is some other style of index
8. **ORDINAL_POSITION** short =\> column sequence number within index; zero when TYPE is tableIndexStatistic
9. **COLUMN_NAME** String =\> column name; `null` when TYPE is tableIndexStatistic
10. **ASC_OR_DESC** String =\> column sort sequence, "A" =\> ascending, "D" =\> descending, may be `null` if sort sequence is not supported; `null` when TYPE is tableIndexStatistic
11. **CARDINALITY** int =\> When TYPE is tableIndexStatistic, then this is the number of rows in the table; otherwise, it is the number of unique values in the index.
12. **PAGES** int =\> When TYPE is tableIndexStatisic then this is the number of pages used for the table, otherwise it is the number of pages used for the current index.
13. **FILTER_CONDITION** String =\> Filter condition, if any. (may be `null`)

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in this database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in this database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in this database |
| unique | when true, return only indices for unique values; when false, return indices regardless of whether unique or not |
| approximate | when true, result is allowed to reflect approximate or out of data values; when false, results are requested to be accurate |
|---|---|

##### Returns

- `ResultSet` - each row is an index column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getJDBCMajorVersion**
()

Retrieves the major JDBC version number for this
driver.

##### Returns

- JDBC version major number

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getJDBCMinorVersion**
()

Retrieves the minor JDBC version number for this
driver.

##### Returns

- JDBC version minor number

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxBinaryLiteralLength**
()

Retrieves the maximum number of hex characters this database allows in an
inline binary literal.

##### Returns

- max the maximum length (in hex characters) for a binary literal; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxCatalogNameLength**
()

Retrieves the maximum number of characters that this database allows in a
catalog name.

##### Returns

- the maximum number of characters allowed in a catalog name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxCharLiteralLength**
()

Retrieves the maximum number of characters this database allows
for a character literal.

##### Returns

- the maximum number of characters allowed for a character literal; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnNameLength**
()

Retrieves the maximum number of characters this database allows
for a column name.

##### Returns

- the maximum number of characters allowed for a column name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnsInGroupBy**
()

Retrieves the maximum number of columns this database allows in a
`GROUP BY` clause.

##### Returns

- the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnsInIndex**
()

Retrieves the maximum number of columns this database allows in an index.

##### Returns

- the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnsInOrderBy**
()

Retrieves the maximum number of columns this database allows in an
`ORDER BY` clause.

##### Returns

- the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnsInSelect**
()

Retrieves the maximum number of columns this database allows in a
`SELECT` list.

##### Returns

- the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxColumnsInTable**
()

Retrieves the maximum number of columns this database allows in a table.

##### Returns

- the maximum number of columns allowed; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxConnections**
()

Retrieves the maximum number of concurrent connections to this
database that are possible.

##### Returns

- the maximum number of active connections possible at one time; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxCursorNameLength**
()

Retrieves the maximum number of characters that this database allows in a
cursor name.

##### Returns

- the maximum number of characters allowed in a cursor name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxIndexLength**
()

Retrieves the maximum number of bytes this database allows for an
index, including all of the parts of the index.

##### Returns

- the maximum number of bytes allowed; this limit includes the composite of all the constituent parts of the index; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxProcedureNameLength**
()

Retrieves the maximum number of characters that this database allows in a
procedure name.

##### Returns

- the maximum number of characters allowed in a procedure name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxRowSize**
()

Retrieves the maximum number of bytes this database allows in
a single row.

##### Returns

- the maximum number of bytes allowed for a row; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxSchemaNameLength**
()

Retrieves the maximum number of characters that this database allows in a
schema name.

##### Returns

- the maximum number of characters allowed in a schema name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxStatementLength**
()

Retrieves the maximum number of characters this database allows in
an SQL statement.

##### Returns

- the maximum number of characters allowed for an SQL statement; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxStatements**
()

Retrieves the maximum number of active statements to this database
that can be open at the same time.

##### Returns

- the maximum number of statements that can be open at one time; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxTableNameLength**
()

Retrieves the maximum number of characters this database allows in
a table name.

##### Returns

- the maximum number of characters allowed for a table name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxTablesInSelect**
()

Retrieves the maximum number of tables this database allows in a
`SELECT` statement.

##### Returns

- the maximum number of tables allowed in a `SELECT` statement; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getMaxUserNameLength**
()

Retrieves the maximum number of characters this database allows in
a user name.

##### Returns

- the maximum number of characters allowed for a user name; a result of zero means that there is no limit or the limit is not known

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getNumericFunctions**
()

Retrieves a comma-separated list of math functions available with
this database. These are the Open /Open CLI math function names used in
the JDBC function escape clause.

##### Returns

- the list of math functions supported by this database

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getPrimaryKeys**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table)

Retrieves a description of the given table's primary key columns. They
are ordered by COLUMN_NAME.

Each primary key column description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **COLUMN_NAME** String =\> column name
5. **KEY_SEQ** short =\> sequence number within primary key( a value of 1 represents the first column of the primary key, a value of 2 would represent the second column within the primary key).
6. **PK_NAME** String =\> primary key name (may be `null`)

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a primary key column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getProcedureColumns**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) procedureNamePattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) columnNamePattern)

Retrieves a description of the given catalog's stored procedure parameter
and result columns.

Only descriptions matching the schema, procedure and
parameter name criteria are returned. They are ordered by
PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME and SPECIFIC_NAME. Within this, the return value,
if any, is first. Next are the parameter descriptions in call
order. The column descriptions follow in column number order.

Each row in the `ResultSet` is a parameter description or
column description with the following fields:

1. **PROCEDURE_CAT** String =\> procedure catalog (may be `null`)
2. **PROCEDURE_SCHEM** String =\> procedure schema (may be `null`)
3. **PROCEDURE_NAME** String =\> procedure name
4. **COLUMN_NAME** String =\> column/parameter name
5. **COLUMN_TYPE** Short =\> kind of column/parameter:
   - procedureColumnUnknown - nobody knows
   - procedureColumnIn - IN parameter
   - procedureColumnInOut - INOUT parameter
   - procedureColumnOut - OUT parameter
   - procedureColumnReturn - procedure return value
   - procedureColumnResult - result column in `ResultSet`
6. **DATA_TYPE** int =\> SQL type from java.sql.Types
7. **TYPE_NAME** String =\> SQL type name, for a UDT type the type name is fully qualified
8. **PRECISION** int =\> precision
9. **LENGTH** int =\> length in bytes of data
10. **SCALE** short =\> scale - null is returned for data types where SCALE is not applicable.
11. **RADIX** short =\> radix
12. **NULLABLE** short =\> can it contain NULL.
    - procedureNoNulls - does not allow NULL values
    - procedureNullable - allows NULL values
    - procedureNullableUnknown - nullability unknown
13. **REMARKS** String =\> comment describing parameter/column
14. **COLUMN_DEF** String =\> default value for the column, which should be interpreted as a string when the value is enclosed in single quotes (may be `null`)
    - The string NULL (not enclosed in quotes) - if NULL was specified as the default value
    - TRUNCATE (not enclosed in quotes) - if the specified default value cannot be represented without truncation
    - NULL - if a default value was not specified
15. **SQL_DATA_TYPE** int =\> reserved for future use
16. **SQL_DATETIME_SUB** int =\> reserved for future use
17. **CHAR_OCTET_LENGTH** int =\> the maximum length of binary and character based columns. For any other datatype the returned value is a NULL
18. **ORDINAL_POSITION** int =\> the ordinal position, starting from 1, for the input and output parameters for a procedure. A value of 0 is returned if this row describes the procedure's return value. For result set columns, it is the ordinal position of the column in the result set starting from 1. If there are multiple result sets, the column ordinal positions are implementation defined.
19. **IS_NULLABLE** String =\> ISO rules are used to determine the nullability for a column.
    - YES --- if the column can include NULLs
    - NO --- if the column cannot include NULLs
    - empty string --- if the nullability for the column is unknown
20. **SPECIFIC_NAME** String =\> the name which uniquely identifies this procedure within its schema.

**Note:** Some databases may not return the column
descriptions for a procedure.

The PRECISION column represents the specified column size for the given column.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| procedureNamePattern | a procedure name pattern; must match the procedure name as it is stored in the database |
| columnNamePattern | a column name pattern; must match the column name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row describes a stored procedure parameter or column

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getProcedureTerm**
()

Retrieves the database vendor's preferred term for "procedure".

##### Returns

- the vendor term for "procedure"

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getProcedures**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) procedureNamePattern)

Retrieves a description of the stored procedures available in the given
catalog.


Only procedure descriptions matching the schema and
procedure name criteria are returned. They are ordered by
`PROCEDURE_CAT`, `PROCEDURE_SCHEM`,
`PROCEDURE_NAME` and `SPECIFIC_ NAME`.

Each procedure description has the the following columns:

1. **PROCEDURE_CAT** String =\> procedure catalog (may be `null`)
2. **PROCEDURE_SCHEM** String =\> procedure schema (may be `null`)
3. **PROCEDURE_NAME** String =\> procedure name
4. reserved for future use
5. reserved for future use
6. reserved for future use
7. **REMARKS** String =\> explanatory comment on the procedure
8. **PROCEDURE_TYPE** short =\> kind of procedure:
   - procedureResultUnknown - Cannot determine if a return value will be returned
   - procedureNoResult - Does not return a return value
   - procedureReturnsResult - Returns a return value
9. **SPECIFIC_NAME** String =\> The name which uniquely identifies this procedure within its schema.


A user may not have permissions to execute any of the procedures that are
returned by `getProcedures`

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| procedureNamePattern | a procedure name pattern; must match the procedure name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a procedure description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract int
**getResultSetHoldability**
()

Retrieves this database's default holdability for `ResultSet`
objects.

##### Returns

- the default holdability; either `ResultSet.HOLD_CURSORS_OVER_COMMIT` or `ResultSet.CLOSE_CURSORS_AT_COMMIT`

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [RowIdLifetime](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/RowIdLifetime.html)
**getRowIdLifetime**
()

Indicates whether or not this data source supports the SQL `ROWID` type,
and if so the lifetime for which a `RowId` object remains valid.


The returned int values have the following relationship:

```
     ROWID_UNSUPPORTED < ROWID_VALID_OTHER < ROWID_VALID_TRANSACTION
         < ROWID_VALID_SESSION < ROWID_VALID_FOREVER
 
```
so conditional logic such as

```
     if (metadata.getRowIdLifetime() > DatabaseMetaData.ROWID_VALID_TRANSACTION)
 
```
can be used. Valid Forever means valid across all Sessions, and valid for a Session means valid across all its contained Transactions.

<br />

##### Returns

- the status indicating the lifetime of a `RowId`

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getSQLKeywords**
()

Retrieves a comma-separated list of all of this database's SQL keywords
that are NOT also SQL:2003 keywords.

##### Returns

- the list of this database's keywords that are not also SQL:2003 keywords

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract int
**getSQLStateType**
()

Indicates whether the SQLSTATE returned by `SQLException.getSQLState`
is X/Open (now known as Open Group) SQL CLI or SQL:2003.

##### Returns

- the type of SQLSTATE; one of: sqlStateXOpen or sqlStateSQL

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getSchemaTerm**
()

Retrieves the database vendor's preferred term for "schema".

##### Returns

- the vendor term for "schema"

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getSchemas**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern)

Retrieves the schema names available in this database. The results
are ordered by `TABLE_CATALOG` and
`TABLE_SCHEM`.

The schema columns are:

1. **TABLE_SCHEM** String =\> schema name
2. **TABLE_CATALOG** String =\> catalog name (may be `null`)

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database;"" retrieves those without a catalog; null means catalog name should not be used to narrow down the search. |
| schemaPattern | a schema name; must match the schema name as it is stored in the database; null means schema name should not be used to narrow down the search. |
|---|---|

##### Returns

- a `ResultSet` object in which each row is a schema description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getSchemas**
()

Retrieves the schema names available in this database. The results
are ordered by `TABLE_CATALOG` and
`TABLE_SCHEM`.

The schema columns are:

1. **TABLE_SCHEM** String =\> schema name
2. **TABLE_CATALOG** String =\> catalog name (may be `null`)

<br />

##### Returns

- a `ResultSet` object in which each row is a schema description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getSearchStringEscape**
()

Retrieves the string that can be used to escape wildcard characters.
This is the string that can be used to escape '_' or '%' in
the catalog search parameters that are a pattern (and therefore use one
of the wildcard characters).

The '_' character represents any single character;
the '%' character represents any sequence of zero or
more characters.

##### Returns

- the string used to escape wildcard characters

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getStringFunctions**
()

Retrieves a comma-separated list of string functions available with
this database. These are the Open Group CLI string function names used
in the JDBC function escape clause.

##### Returns

- the list of string functions supported by this database

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getSuperTables**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern)

Retrieves a description of the table hierarchies defined in a particular
schema in this database.

Only supertable information for tables matching the catalog, schema
and table name are returned. The table name parameter may be a fully-
qualified name, in which case, the catalog and schemaPattern parameters
are ignored. If a table does not have a super table, it is not listed here.
Supertables have to be defined in the same catalog and schema as the
sub tables. Therefore, the type description does not need to include
this information for the supertable.

Each type description has the following columns:

1. **TABLE_CAT** String =\> the type's catalog (may be `null`)
2. **TABLE_SCHEM** String =\> type's schema (may be `null`)
3. **TABLE_NAME** String =\> type name
4. **SUPERTABLE_NAME** String =\> the direct super type's name

**Note:** If the driver does not support type hierarchies, an
empty result set is returned.

##### Parameters

| catalog | a catalog name; "" retrieves those without a catalog; `null` means drop catalog name from the selection criteria |
| schemaPattern | a schema name pattern; "" retrieves those without a schema |
| tableNamePattern | a table name pattern; may be a fully-qualified name |
|---|---|

##### Returns

- a `ResultSet` object in which each row is a type description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getSuperTypes**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern)

Retrieves a description of the user-defined type (UDT) hierarchies defined in a
particular schema in this database. Only the immediate super type/
sub type relationship is modeled.


Only supertype information for UDTs matching the catalog,
schema, and type name is returned. The type name parameter
may be a fully-qualified name. When the UDT name supplied is a
fully-qualified name, the catalog and schemaPattern parameters are
ignored.


If a UDT does not have a direct super type, it is not listed here.
A row of the `ResultSet` object returned by this method
describes the designated UDT and a direct supertype. A row has the following
columns:

1. **TYPE_CAT** String =\> the UDT's catalog (may be `null`)
2. **TYPE_SCHEM** String =\> UDT's schema (may be `null`)
3. **TYPE_NAME** String =\> type name of the UDT
4. **SUPERTYPE_CAT** String =\> the direct super type's catalog (may be `null`)
5. **SUPERTYPE_SCHEM** String =\> the direct super type's schema (may be `null`)
6. **SUPERTYPE_NAME** String =\> the direct super type's name

**Note:** If the driver does not support type hierarchies, an
empty result set is returned.

##### Parameters

| catalog | a catalog name; "" retrieves those without a catalog; `null` means drop catalog name from the selection criteria |
| schemaPattern | a schema name pattern; "" retrieves those without a schema |
| typeNamePattern | a UDT name pattern; may be a fully-qualified name |
|---|---|

##### Returns

- a `ResultSet` object in which a row gives information about the designated UDT

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getSystemFunctions**
()

Retrieves a comma-separated list of system functions available with
this database. These are the Open Group CLI system function names used
in the JDBC function escape clause.

##### Returns

- a list of system functions supported by this database

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getTablePrivileges**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern)

Retrieves a description of the access rights for each table available
in a catalog. Note that a table privilege applies to one or
more columns in the table. It would be wrong to assume that
this privilege applies to all columns (this may be true for
some systems but is not true for all.)

Only privileges matching the schema and table name
criteria are returned. They are ordered by
`TABLE_CAT`,
`TABLE_SCHEM`, `TABLE_NAME`,
and `PRIVILEGE`.

Each privilige description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **GRANTOR** String =\> grantor of access (may be `null`)
5. **GRANTEE** String =\> grantee of access
6. **PRIVILEGE** String =\> name of access (SELECT, INSERT, UPDATE, REFRENCES, ...)
7. **IS_GRANTABLE** String =\> "YES" if grantee is permitted to grant to others; "NO" if not; `null` if unknown

<br />

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
|---|---|

##### Returns

- `ResultSet` - each row is a table privilege description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getTableTypes**
()

Retrieves the table types available in this database. The results
are ordered by table type.

The table type is:

1. **TABLE_TYPE** String =\> table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".

<br />

##### Returns

- a `ResultSet` object in which each row has a single `String` column that is a table type

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getTables**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) tableNamePattern, [String\[\]](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) types)

Retrieves a description of the tables available in the given catalog.
Only table descriptions matching the catalog, schema, table
name and type criteria are returned. They are ordered by
`TABLE_TYPE`, `TABLE_CAT`,
`TABLE_SCHEM` and `TABLE_NAME`.


Each table description has the following columns:

1. **TABLE_CAT** String =\> table catalog (may be `null`)
2. **TABLE_SCHEM** String =\> table schema (may be `null`)
3. **TABLE_NAME** String =\> table name
4. **TABLE_TYPE** String =\> table type. Typical types are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
5. **REMARKS** String =\> explanatory comment on the table
6. **TYPE_CAT** String =\> the types catalog (may be `null`)
7. **TYPE_SCHEM** String =\> the types schema (may be `null`)
8. **TYPE_NAME** String =\> type name (may be `null`)
9. **SELF_REFERENCING_COL_NAME** String =\> name of the designated "identifier" column of a typed table (may be `null`)
10. **REF_GENERATION** String =\> specifies how values in SELF_REFERENCING_COL_NAME are created. Values are "SYSTEM", "USER", "DERIVED". (may be `null`)

**Note:** Some databases may not return information for
all tables.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema name pattern; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| tableNamePattern | a table name pattern; must match the table name as it is stored in the database |
| types | a list of table types, which must be from the list of table types returned from `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getTableTypes()`,to include; `null` returns all types |
|---|---|

##### Returns

- `ResultSet` - each row is a table description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getTimeDateFunctions**
()

Retrieves a comma-separated list of the time and date functions available
with this database.

##### Returns

- the list of time and date functions supported by this database

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getTypeInfo**
()

Retrieves a description of all the data types supported by
this database. They are ordered by DATA_TYPE and then by how
closely the data type maps to the corresponding JDBC SQL type.

If the database supports SQL distinct types, then getTypeInfo() will return
a single row with a TYPE_NAME of DISTINCT and a DATA_TYPE of Types.DISTINCT.
If the database supports SQL structured types, then getTypeInfo() will return
a single row with a TYPE_NAME of STRUCT and a DATA_TYPE of Types.STRUCT.

If SQL distinct or structured types are supported, then information on the
individual types may be obtained from the getUDTs() method.


Each type description has the following columns:

1. **TYPE_NAME** String =\> Type name
2. **DATA_TYPE** int =\> SQL data type from java.sql.Types
3. **PRECISION** int =\> maximum precision
4. **LITERAL_PREFIX** String =\> prefix used to quote a literal (may be `null`)
5. **LITERAL_SUFFIX** String =\> suffix used to quote a literal (may be `null`)
6. **CREATE_PARAMS** String =\> parameters used in creating the type (may be `null`)
7. **NULLABLE** short =\> can you use NULL for this type.
   - typeNoNulls - does not allow NULL values
   - typeNullable - allows NULL values
   - typeNullableUnknown - nullability unknown
8. **CASE_SENSITIVE** boolean=\> is it case sensitive.
9. **SEARCHABLE** short =\> can you use "WHERE" based on this type:
   - typePredNone - No support
   - typePredChar - Only supported with WHERE .. LIKE
   - typePredBasic - Supported except for WHERE .. LIKE
   - typeSearchable - Supported for all WHERE ..
10. **UNSIGNED_ATTRIBUTE** boolean =\> is it unsigned.
11. **FIXED_PREC_SCALE** boolean =\> can it be a money value.
12. **AUTO_INCREMENT** boolean =\> can it be used for an auto-increment value.
13. **LOCAL_TYPE_NAME** String =\> localized version of type name (may be `null`)
14. **MINIMUM_SCALE** short =\> minimum scale supported
15. **MAXIMUM_SCALE** short =\> maximum scale supported
16. **SQL_DATA_TYPE** int =\> unused
17. **SQL_DATETIME_SUB** int =\> unused
18. **NUM_PREC_RADIX** int =\> usually 2 or 10

The PRECISION column represents the maximum column size that the server supports for the given datatype.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Returns

- a `ResultSet` object in which each row is an SQL type description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getUDTs**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schemaPattern, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) typeNamePattern, int\[\] types)

Retrieves a description of the user-defined types (UDTs) defined
in a particular schema. Schema-specific UDTs may have type
`JAVA_OBJECT`, `STRUCT`,
or `DISTINCT`.

Only types matching the catalog, schema, type name and type
criteria are returned. They are ordered by `DATA_TYPE`,
`TYPE_CAT`, `TYPE_SCHEM` and
`TYPE_NAME`. The type name parameter may be a fully-qualified
name. In this case, the catalog and schemaPattern parameters are
ignored.

Each type description has the following columns:

1. **TYPE_CAT** String =\> the type's catalog (may be `null`)
2. **TYPE_SCHEM** String =\> type's schema (may be `null`)
3. **TYPE_NAME** String =\> type name
4. **CLASS_NAME** String =\> Java class name
5. **DATA_TYPE** int =\> type value defined in java.sql.Types. One of JAVA_OBJECT, STRUCT, or DISTINCT
6. **REMARKS** String =\> explanatory comment on the type
7. **BASE_TYPE** short =\> type code of the source type of a DISTINCT type or the type that implements the user-generated reference type of the SELF_REFERENCING_COLUMN of a structured type as defined in java.sql.Types (`null` if DATA_TYPE is not DISTINCT or not STRUCT with REFERENCE_GENERATION = USER_DEFINED)

**Note:** If the driver does not support UDTs, an empty
result set is returned.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schemaPattern | a schema pattern name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| typeNamePattern | a type name pattern; must match the type name as it is stored in the database; may be a fully qualified name |
| types | a list of user-defined types (JAVA_OBJECT, STRUCT, or DISTINCT) to include; `null` returns all types |
|---|---|

##### Returns

- `ResultSet` object in which each row describes a UDT

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/DatabaseMetaData.html#getSearchStringEscape()`

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getURL**
()

Retrieves the URL for this DBMS.

##### Returns

- the URL for this DBMS or `null` if it cannot be generated

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html)
**getUserName**
()

Retrieves the user name as known to this database.

##### Returns

- the database user name

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract [ResultSet](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/ResultSet.html)
**getVersionColumns**
([String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) catalog, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) schema, [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) table)

Retrieves a description of a table's columns that are automatically
updated when any value in a row is updated. They are
unordered.

Each column description has the following columns:

1. **SCOPE** short =\> is not used
2. **COLUMN_NAME** String =\> column name
3. **DATA_TYPE** int =\> SQL data type from `java.sql.Types`
4. **TYPE_NAME** String =\> Data source-dependent type name
5. **COLUMN_SIZE** int =\> precision
6. **BUFFER_LENGTH** int =\> length of column value in bytes
7. **DECIMAL_DIGITS** short =\> scale - Null is returned for data types where DECIMAL_DIGITS is not applicable.
8. **PSEUDO_COLUMN** short =\> whether this is pseudo column like an Oracle ROWID
   - versionColumnUnknown - may or may not be pseudo column
   - versionColumnNotPseudo - is NOT a pseudo column
   - versionColumnPseudo - is a pseudo column

The COLUMN_SIZE column represents the specified column size for the given column.
For numeric data, this is the maximum precision. For character data, this is the length in characters.
For datetime datatypes, this is the length in characters of the String representation (assuming the
maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
this is the length in bytes. Null is returned for data types where the
column size is not applicable.

##### Parameters

| catalog | a catalog name; must match the catalog name as it is stored in the database; "" retrieves those without a catalog; `null` means that the catalog name should not be used to narrow the search |
| schema | a schema name; must match the schema name as it is stored in the database; "" retrieves those without a schema; `null` means that the schema name should not be used to narrow the search |
| table | a table name; must match the table name as it is stored in the database |
|---|---|

##### Returns

- a `ResultSet` object in which each row is a column description

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**insertsAreDetected**
(int type)

Retrieves whether or not a visible row insert can be detected
by calling the method `ResultSet.rowInserted`.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if changes are detected by the specified result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**isCatalogAtStart**
()

Retrieves whether a catalog appears at the start of a fully qualified
table name. If not, the catalog appears at the end.

##### Returns

- `true` if the catalog name appears at the beginning of a fully qualified table name; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**isReadOnly**
()

Retrieves whether this database is in read-only mode.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**locatorsUpdateCopy**
()

Indicates whether updates made to a LOB are made on a copy or directly
to the LOB.

##### Returns

- `true` if updates are made to a copy of the LOB; `false` if updates are made directly to the LOB

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**nullPlusNonNullIsNull**
()

Retrieves whether this database supports concatenations between
`NULL` and non-`NULL` values being
`NULL`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**nullsAreSortedAtEnd**
()

Retrieves whether `NULL` values are sorted at the end regardless of
sort order.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**nullsAreSortedAtStart**
()

Retrieves whether `NULL` values are sorted at the start regardless
of sort order.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**nullsAreSortedHigh**
()

Retrieves whether `NULL` values are sorted high.
Sorted high means that `NULL` values
sort higher than any other value in a domain. In an ascending order,
if this method returns `true`, `NULL` values
will appear at the end. By contrast, the method
`nullsAreSortedAtEnd` indicates whether `NULL` values
are sorted at the end regardless of sort order.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**nullsAreSortedLow**
()

Retrieves whether `NULL` values are sorted low.
Sorted low means that `NULL` values
sort lower than any other value in a domain. In an ascending order,
if this method returns `true`, `NULL` values
will appear at the beginning. By contrast, the method
`nullsAreSortedAtStart` indicates whether `NULL` values
are sorted at the beginning regardless of sort order.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**othersDeletesAreVisible**
(int type)

Retrieves whether deletes made by others are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if deletes made by others are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**othersInsertsAreVisible**
(int type)

Retrieves whether inserts made by others are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if inserts made by others are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**othersUpdatesAreVisible**
(int type)

Retrieves whether updates made by others are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if updates made by others are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**ownDeletesAreVisible**
(int type)

Retrieves whether a result set's own deletes are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if deletes are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**ownInsertsAreVisible**
(int type)

Retrieves whether a result set's own inserts are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if inserts are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**ownUpdatesAreVisible**
(int type)

Retrieves whether for the given type of `ResultSet` object,
the result set's own updates are visible.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if updates are visible for the given result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesLowerCaseIdentifiers**
()

Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in lower case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesLowerCaseQuotedIdentifiers**
()

Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in lower case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesMixedCaseIdentifiers**
()

Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in mixed case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesMixedCaseQuotedIdentifiers**
()

Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in mixed case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesUpperCaseIdentifiers**
()

Retrieves whether this database treats mixed case unquoted SQL identifiers as
case insensitive and stores them in upper case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**storesUpperCaseQuotedIdentifiers**
()

Retrieves whether this database treats mixed case quoted SQL identifiers as
case insensitive and stores them in upper case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsANSI92EntryLevelSQL**
()

Retrieves whether this database supports the ANSI92 entry level SQL
grammar.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsANSI92FullSQL**
()

Retrieves whether this database supports the ANSI92 full SQL grammar supported.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsANSI92IntermediateSQL**
()

Retrieves whether this database supports the ANSI92 intermediate SQL grammar supported.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsAlterTableWithAddColumn**
()

Retrieves whether this database supports `ALTER TABLE`
with add column.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsAlterTableWithDropColumn**
()

Retrieves whether this database supports `ALTER TABLE`
with drop column.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsBatchUpdates**
()

Retrieves whether this database supports batch updates.

##### Returns

- `true` if this database supports batch upcates; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCatalogsInDataManipulation**
()

Retrieves whether a catalog name can be used in a data manipulation statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCatalogsInIndexDefinitions**
()

Retrieves whether a catalog name can be used in an index definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCatalogsInPrivilegeDefinitions**
()

Retrieves whether a catalog name can be used in a privilege definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCatalogsInProcedureCalls**
()

Retrieves whether a catalog name can be used in a procedure call statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCatalogsInTableDefinitions**
()

Retrieves whether a catalog name can be used in a table definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsColumnAliasing**
()

Retrieves whether this database supports column aliasing.

If so, the SQL AS clause can be used to provide names for
computed columns or to provide alias names for columns as
required.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsConvert**
(int fromType, int toType)

Retrieves whether this database supports the JDBC scalar function
`CONVERT` for conversions between the JDBC types *fromType*
and *toType*. The JDBC types are the generic SQL data types defined
in `java.sql.Types`.

##### Parameters

| fromType | the type to convert from; one of the type codes from the class `java.sql.Types` |
| toType | the type to convert to; one of the type codes from the class `java.sql.Types` |
|---|---|

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Types.html`

#### public abstract boolean
**supportsConvert**
()

Retrieves whether this database supports the JDBC scalar function
`CONVERT` for the conversion of one JDBC type to another.
The JDBC types are the generic SQL data types defined
in `java.sql.Types`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCoreSQLGrammar**
()

Retrieves whether this database supports the ODBC Core SQL grammar.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsCorrelatedSubqueries**
()

Retrieves whether this database supports correlated subqueries.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsDataDefinitionAndDataManipulationTransactions**
()

Retrieves whether this database supports both data definition and
data manipulation statements within a transaction.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsDataManipulationTransactionsOnly**
()

Retrieves whether this database supports only data manipulation
statements within a transaction.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsDifferentTableCorrelationNames**
()

Retrieves whether, when table correlation names are supported, they
are restricted to being different from the names of the tables.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsExpressionsInOrderBy**
()

Retrieves whether this database supports expressions in
`ORDER BY` lists.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsExtendedSQLGrammar**
()

Retrieves whether this database supports the ODBC Extended SQL grammar.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsFullOuterJoins**
()

Retrieves whether this database supports full nested outer joins.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsGetGeneratedKeys**
()

Retrieves whether auto-generated keys can be retrieved after
a statement has been executed

##### Returns

- `true` if auto-generated keys can be retrieved after a statement has executed; `false` otherwise

  If `true` is returned, the JDBC driver must support the
  returning of auto-generated keys for at least SQL INSERT statements

  <br />

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsGroupBy**
()

Retrieves whether this database supports some form of
`GROUP BY` clause.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsGroupByBeyondSelect**
()

Retrieves whether this database supports using columns not included in
the `SELECT` statement in a `GROUP BY` clause
provided that all of the columns in the `SELECT` statement
are included in the `GROUP BY` clause.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsGroupByUnrelated**
()

Retrieves whether this database supports using a column that is
not in the `SELECT` statement in a
`GROUP BY` clause.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsIntegrityEnhancementFacility**
()

Retrieves whether this database supports the SQL Integrity
Enhancement Facility.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsLikeEscapeClause**
()

Retrieves whether this database supports specifying a
`LIKE` escape clause.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsLimitedOuterJoins**
()

Retrieves whether this database provides limited support for outer
joins. (This will be `true` if the method
`supportsFullOuterJoins` returns `true`).

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsMinimumSQLGrammar**
()

Retrieves whether this database supports the ODBC Minimum SQL grammar.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsMixedCaseIdentifiers**
()

Retrieves whether this database treats mixed case unquoted SQL identifiers as
case sensitive and as a result stores them in mixed case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsMixedCaseQuotedIdentifiers**
()

Retrieves whether this database treats mixed case quoted SQL identifiers as
case sensitive and as a result stores them in mixed case.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsMultipleOpenResults**
()

Retrieves whether it is possible to have multiple `ResultSet` objects
returned from a `CallableStatement` object
simultaneously.

##### Returns

- `true` if a `CallableStatement` object can return multiple `ResultSet` objects simultaneously; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a datanase access error occurs |
|---|---|

#### public abstract boolean
**supportsMultipleResultSets**
()

Retrieves whether this database supports getting multiple
`ResultSet` objects from a single call to the
method `execute`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsMultipleTransactions**
()

Retrieves whether this database allows having multiple
transactions open at once (on different connections).

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsNamedParameters**
()

Retrieves whether this database supports named parameters to callable
statements.

##### Returns

- `true` if named parameters are supported; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsNonNullableColumns**
()

Retrieves whether columns in this database may be defined as non-nullable.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOpenCursorsAcrossCommit**
()

Retrieves whether this database supports keeping cursors open
across commits.

##### Returns

- `true` if cursors always remain open; `false` if they might not remain open

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOpenCursorsAcrossRollback**
()

Retrieves whether this database supports keeping cursors open
across rollbacks.

##### Returns

- `true` if cursors always remain open; `false` if they might not remain open

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOpenStatementsAcrossCommit**
()

Retrieves whether this database supports keeping statements open
across commits.

##### Returns

- `true` if statements always remain open; `false` if they might not remain open

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOpenStatementsAcrossRollback**
()

Retrieves whether this database supports keeping statements open
across rollbacks.

##### Returns

- `true` if statements always remain open; `false` if they might not remain open

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOrderByUnrelated**
()

Retrieves whether this database supports using a column that is
not in the `SELECT` statement in an
`ORDER BY` clause.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsOuterJoins**
()

Retrieves whether this database supports some form of outer join.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsPositionedDelete**
()

Retrieves whether this database supports positioned `DELETE`
statements.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsPositionedUpdate**
()

Retrieves whether this database supports positioned `UPDATE`
statements.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsResultSetConcurrency**
(int type, int concurrency)

Retrieves whether this database supports the given concurrency type
in combination with the given result set type.

##### Parameters

| type | defined in `java.sql.ResultSet` |
| concurrency | type defined in `java.sql.ResultSet` |
|---|---|

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html`

#### public abstract boolean
**supportsResultSetHoldability**
(int holdability)

Retrieves whether this database supports the given result set holdability.

##### Parameters

| holdability | one of the following constants: `ResultSet.HOLD_CURSORS_OVER_COMMIT` or `ResultSet.CLOSE_CURSORS_AT_COMMIT` |
|---|---|

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html`

#### public abstract boolean
**supportsResultSetType**
(int type)

Retrieves whether this database supports the given result set type.

##### Parameters

| type | defined in `java.sql.ResultSet` |
|---|---|

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html`

#### public abstract boolean
**supportsSavepoints**
()

Retrieves whether this database supports savepoints.

##### Returns

- `true` if savepoints are supported; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSchemasInDataManipulation**
()

Retrieves whether a schema name can be used in a data manipulation statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSchemasInIndexDefinitions**
()

Retrieves whether a schema name can be used in an index definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSchemasInPrivilegeDefinitions**
()

Retrieves whether a schema name can be used in a privilege definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSchemasInProcedureCalls**
()

Retrieves whether a schema name can be used in a procedure call statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSchemasInTableDefinitions**
()

Retrieves whether a schema name can be used in a table definition statement.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSelectForUpdate**
()

Retrieves whether this database supports `SELECT FOR UPDATE`
statements.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsStatementPooling**
()

Retrieves whether this database supports statement pooling.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsStoredFunctionsUsingCallSyntax**
()

Retrieves whether this database supports invoking user-defined or vendor functions
using the stored procedure escape syntax.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsStoredProcedures**
()

Retrieves whether this database supports stored procedure calls
that use the stored procedure escape syntax.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSubqueriesInComparisons**
()

Retrieves whether this database supports subqueries in comparison
expressions.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSubqueriesInExists**
()

Retrieves whether this database supports subqueries in
`EXISTS` expressions.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSubqueriesInIns**
()

Retrieves whether this database supports subqueries in
`IN` expressions.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsSubqueriesInQuantifieds**
()

Retrieves whether this database supports subqueries in quantified
expressions.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsTableCorrelationNames**
()

Retrieves whether this database supports table correlation names.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsTransactionIsolationLevel**
(int level)

Retrieves whether this database supports the given transaction isolation level.

##### Parameters

| level | one of the transaction isolation levels defined in `java.sql.Connection` |
|---|---|

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/Connection.html`

#### public abstract boolean
**supportsTransactions**
()

Retrieves whether this database supports transactions. If not, invoking the
method `commit` is a noop, and the isolation level is
`TRANSACTION_NONE`.

##### Returns

- `true` if transactions are supported; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsUnion**
()

Retrieves whether this database supports SQL `UNION`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**supportsUnionAll**
()

Retrieves whether this database supports SQL `UNION ALL`.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**updatesAreDetected**
(int type)

Retrieves whether or not a visible row update can be detected by
calling the method `ResultSet.rowUpdated`.

##### Parameters

| type | the `ResultSet` type; one of `ResultSet.TYPE_FORWARD_ONLY`, `ResultSet.TYPE_SCROLL_INSENSITIVE`, or `ResultSet.TYPE_SCROLL_SENSITIVE` |
|---|---|

##### Returns

- `true` if changes are detected by the result set type; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**usesLocalFilePerTable**
()

Retrieves whether this database uses a file for each table.

##### Returns

- `true` if this database uses a local file for each table; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|

#### public abstract boolean
**usesLocalFiles**
()

Retrieves whether this database stores tables in a local file.

##### Returns

- `true` if so; `false` otherwise

##### Throws

| [SQLException](https://developers.google.com/j2objc/javadoc/jre/reference/java/sql/SQLException.html) | if a database access error occurs |
|---|---|