You need to base a data block on the EMP table, but you do not want to give the users of the application access privileges on the table. Which type of data source would you use to create the data block?（）

单项选择题Youneedtodisplayaverylargesingle-recorddatablock.Sinceitwillbesolarge,aconvenientmeansofnavigationisneededbetweenitems.Whichtypeofcanvaswouldyouusetodisplaythedatablock?（）

A.Tab canvas. 
B.Pop up canvas. 
C.Spread table canvas. 
D.Vertical toolbar canvas.

单项选择题WhichvalueisvalidfortheiterateparameterintheCREATE_TIMERbuilt-infunction?（）

A.CYCLE 
B.ITERATE
C.NO_REPEAT 
D.REUSE

单项选择题Form_AinvokesForm_BinPost-Onlymode.Whichstatementmustbetrue?（）

A.Form_A has updates or deletes that have not been posted or committed, and Form_A invokes Form_B with the OPEN_FORM built-in. 
B.Form_A has updates or deletes that have not been posted or committed, and Form_A invokes Form_B with the CALL_FORM built-in. 
C.Form_A has inserts that have not been posted or committed, and Form_A invokes Form_B with the OPEN_FORM built-in. 
D.Form_A has inserts that have not been posted or committed, and Form_A invokes Form_B with the CALL_FORM built in.

单项选择题YourenduserswillneedtochangevaluesinaREFlookupfieldintheformapplicationyoucreate.Tofacilitatechoosinganewappropriatevalue,yourprovidethemwith?（）

A.An LOV for REFS. 
B.A list item for REFs. 
C.A radio group for REFs. 
D.A hierarchical tree for REFS

单项选择题Youwanttocreateatemporarytablewhileexecutingaprocedureinaform.Whichstatementistrue?（）

A.You cannot create a table form within Forms. 
B.You must use the FORMS_DDL built-in to create the table. 
C.You must use the DBMS_DYNAMIC_DDL package to create the table. 
D.You can write the CREATE TABLE statement directly into the trigger.