You created a custom menu for the Order Entry application. The shipping administrator has requested an additional submenu containing four items to invoke various reports. Which command type must you use to identify the parent menu item as a submenu? （）

单项选择题Whichbuilt-inallowsyoutoupdatethescreendisplaytoreflecttheinformationthatFormshasinitsinternalrepresentationofthescreen?（）

A.SYNCHRONIZE 
B.UPDATE_FORM 
C.SYNCHRONIZE_FORM 
D.GET_MEMORY_DISPLAY 
E.SET_MEMORY_DISPLAY

单项选择题Howcanyoumodifytheapplicationtoreturnmoremeaningfulerrormessagestotheuser?（）

A.Create a custom messages table. Include the necessary error handling code in the form modules to display the meaningful custom message instead of the ORA- error message. 
B.Provide users with a form in the application to query the ORA- error, that will return a custom message to replace the ORA- message. 
C.Eliminate constraints where possible, thereby limiting the number of error messages returned. 
D.Create a procedure to include the RETRIEVE_MESSAGE built-in that automatically translates common server errors into meaningful messages for use in Forms.

单项选择题Whenarepeatingtimerexpires,（）.

A.The When-Timer-Expired trigger resets the timer's iteration parameter. 
B.The When-Custom-Item-Event trigger fires and executes the desired actions. 
C.It is put in a queue of expired timers for processing on a first-in-first-out basis. 
D.The When-Timer-Expired trigger fires instantly regardless of any other processing in the form module. 

单项选择题AsanalternativetosettingtheVisiblepropertytoNofortheORDERS_WINDOW,whichbuilt-incouldyouusetoachievethesameresult?（）

A.HIDE_WINDOW 
B.CLOSE_WINDOW 
C.REPLACE_CONTENT_VIEW
D.GET_WINDOW_PROPERTY

单项选择题Whichcanvasbuilt-indisplaythegivencanvasinfrontofanystackedcanvases?（）

A.HIDE_VIEW 
B.SHOW_VIEW 
C.SET_CANVAS_PROPERTY 
D.REPLACE_CONTENT_VIEW