# Connection functionality not supported

Derby does not use catalog names. In addition, the following optional methods raise "Feature not supported" exceptions.

- createArrayOf( java.lang.String, java.lang.Object[] )
- createNClob( )
- createSQLXML( )
- createStruct( java.lang.String, java.lang.Object[] )
- getTypeMap( )
- prepareStatement( java.lang.String, int[] )
- prepareStatement( java.lang.String, java.lang.String[] )
- setTypeMap( java.util.Map )

Parent topic: java.sql.Connection interface
Related reference
java.sql.Connection.setTransactionIsolation method
java.sql.Connection.setReadOnly method
java.sql.Connection.isReadOnly method