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计算机考试试题及答案解析

单项选择题

Theusersrequestthat[F2],[F3],and[F4]beusedtocommit,rollback,andexit,respectively.Howdoyouaccomplishthis?（）
A.AddtheappropriatePL/SQLcodeforeachkey.
B.Mapthelogicalkeystothephysicalkeys,thenaddtheappropriatePL/SQLcodeforeachkey.
C.Createanobjectlibrarytodefinethekeytriggers,thenreferencetheobjectlibraryintheform.
D.Thiscannotbeaccomplishedbecauseotherfunctionkeysprovidethisfunctionalitybydefault.
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