version_column.getColumnMetaData().setLength(20);
version_column.getColumnMetaData().setJdbcType("VARCHAR");
interfaceNameMapping = mapMgr.getMapping(String.class);
Column interfaceName_column=(Column) addDatastoreField(String.class.getName(),
idFactory.newDatastoreFieldIdentifier("INTERFACE_NAME"), interfaceNameMapping, null);
mapMgr.createDatastoreMapping(interfaceNameMapping, interfaceName_column, String.class.getName());
interfaceName_column.getColumnMetaData().setLength(255);
interfaceName_column.getColumnMetaData().setJdbcType("VARCHAR");
interfaceName_column.setNullable();