说明：  The intended use of this help manual is a quick reference guide as it is not fully inclusive of all elements of the PL/SQL Programming Language. Please refer to the PL/SQL User s Guide and Reference for more information.
(The intended use of this help manual is a q uick reference guide as it is not fully inclusiv e of all elements of the PL/SQL Programming Lang uage. Please refer to the PL/SQL User's Guide and Reference for more information.)