... OA7)Scan(OA1,"Publications",OA6)CreateSet(OA4, OA5)Scan(OA1,"Name",OA4)SetOp(Union,OA5,OA6, OA7)Select(OA3 = TRUE)Aggr(Exists, OA2, OA3)Select(OA2 = "CS")Scan(OA1,"Dept",OA2)Lindex(OA2,"Age",OA1)Named_Obj("DBGroup", ... -DataGuide Mgr -Loader -Index MgrQueryOperatorsObjectManagerExternal DataManagerQueryOptimizerQuery PlanGeneratorPreprocessing(Lorel to OQL)ParsingHTML GUITextualInterfaceAPIApplicationsLoreSystemQueries...