@Override
    public ResultSet getExportedKeys( String catalog,
                                      String schema,
                                      String table ) throws SQLException {
        return getImportedKeys(catalog, schema, table); // empty, but same resultsetmetadata
    }
@ Override public ResultSet getExportedKeys ( String catalog , String schema , String table ) throws SQLException { return getImportedKeys ( catalog , schema , table ) ; }
{@inheritDoc}
<p>
This driver maps REFERENCE properties as keys, and therefore it represents as imported keys those REFERENCE properties on
the type identified by the table name.
</p>

@see java.sql.DatabaseMetaData#getExportedKeys(java.lang.String, java.lang.String, java.lang.String)