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The users request that [F2], [F3], and [F4] be used to commit, rollback, and exit,respectively. How do you accomplish this?（）
A:Add the appropriate PL/SQL code for each key. 
B:Map the logical keys to the physical keys, then add the appropriate PL/SQL code for each key.
C:Create an object library to define the key triggers, then reference the object library in the form. 
D:This cannot be accomplished because other function keys provide this functionality by default.

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出自：Oracle认证

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