单项选择题

Which technique retrieves the error number when explicit DML fails?（）

A.SQLCODE in an On-Error trigger.
B.SQLCODE in an exception handler.
C.DBMS_ERROR_CODE in an On-Error trigger.
D.DBMS_ERROR_CODE in an exception handler.

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单项选择题

YoucreateadatablockbasedonarelationaltablecontainingaREFcolumn.YouselecttheREFcolumnforyourformmodule.WhatistrueabouttheitemsbasedontheREFcolumnattributes?（）

A.The Query Only property is set to Yes.
B.The Conceal Data property is set to Yes.
C.The Insert Allowed property is set to Yes.
D.The Update Allowed property is set to Yes.

单项选择题

Youestablishedaccesstomenumodulesusingroles.Youhaveallowedthesalesroletoaccessthemenumodule,butpreventedaccesstotheUpdatemenuitem.Whichitempropertywouldyoualtertograyoutthemenuoptionfortherole?（）

A.Item Roles.
B.Menu Item Roles.
C.Display without Privilege.
D.Use Security.
E.Command Type.