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.
相关考题
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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. -
单项选择题
Youwanttoimplementamaster-detailrelationbetweendatablocksbasedonobjecttables.Howwouldyoudothis?（）
A.Create the relation manually and coordinate the blocks using triggers.
B.Base the relation on a REF pointer using the Data Block Wizard.
C.Base the relation on a foreign key using the Data Block Wizard.
D.This task is not possible because master-detail relations can be implemented only for blocks based on relation tables.
