試題詳解

複選題
QUESTION 92 Which two statements about functions are true? (Choose two.) 頭尾
(A) A function must have a return statement in its body to execute successfully
(B) Client-side functions can be used in SOL statements
(C) A stored function that is called from a SOL statement can return a value of any PL/SOL variable data type
(D) From SOL*Plus, a function can be executed by giving the command EXECUTE functionname;
(E) A stored function increases efficiency of queries by performing functions on the server rather than in the application