試題詳解

QUESTION 42 Which statement is true? long
(A) Stored functions can be called from the SELECT and WHERE clauses only.
(B) Stored functions do not permit calculations that involve database links in a distributed environment.
(C) Stored functions cannot manipulate new types of data, such as longitude and latitude.
(D) Stored functions can increase the efficiency of queries by performing functions in the query rather than in the application.