SQL and PL/SQL FunctionsSTANDARD and DBMS_STANDARDSimplifying Nested SQL Functions with PL/SQLPL/SQL Function ConsiderationsParameters, Purity Levels, and DeterministicContext Switching OverheadLoss of Point-in-Time ViewPL/SQL Results CachingCorrect Implementation for the DISP_NAME FunctionalitySummary