Which built-in returns a BOOLEAN value that indicated whether an objects internal ID is available?（）

多项选择题Whichtwobuilt-inswouldyouusetoremovetheHOUR_ALARMtimerusingthetimer_idparameter?（）

A.FIND_TIMER 
B.CREATE_TIMER 
C.SET_TIMER 
D.DELETE_TIMER 
E.GET_APPLICATION_PROPERTY

单项选择题WhichtechniqueretrievestheerrornumberwhenexplicitDMLfails?（）

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. 

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.