This figure shows OO4O objects and their relations. The relations are as follows: from OraServer to OraSession; from OraDatabase to both OraServer and OraSession; from each of OraDynaset, OraMetaData, OraParameters, OraSQLStmt, and OraAQ to OraDatabase; from multiple OraField objects to OraDynaset; from multiple OraMDAttribute objects to OraMetaData; from multiple OraParameter and OraParamArray objects to OraParameters; from OraAQMsg to OraAQ.