For methods that take a catalog parameter, always specify null for
this parameter, since
does not support catalogs. Similarly, methods that return a catalog in the
ResultSet will always return null in that column.
The implementation
of the getColumns method returns an empty ResultSet if the
table specified in the third argument is a SYNONYM. The method reports "YES" as
the value of IS_AUTOINCREMENT if a column is generated.
The implementation
of the getResultSetHoldability method returns
ResultSet.HOLD_CURSORS_OVER_COMMIT.