You create a package that contains PL/SQL variables that must be shared among several forms in the Travel application. You place the package in a library and attach the library to all the forms that need to share the data. Which parameter in the OPEN_FORM built-in must you set to ensure that changes made by one form are visible to the other forms in the application?（）

多项选择题Whichthreeobjectscanbecomponentsofamenumodule?（）

A.windows 
B.parameters 
C.object groups 
D.report objects 
E.visual attributes 

单项选择题YoucreateadatablockbasedonarelationtablecontainingaREFcolumn.YouselecttheREFcolumnforyourformmodule.WhichstatementabouttheREFcolumnistrue?（）

A.It is created as a nondisplay item. 
B.The Lock Record property is set to Yes. 
C.It cannot be referenced in item level triggers. 
D.It is placed on the canvas with the highest sequence number.

单项选择题WhichvalueisvalidfortheiterateparameterinSET_TIMERbuilt-inprocedure?（）

A.REUSE 
B.RECYCLE 
C.NO_CHANGE 
D.OCCURRENCE

单项选择题WherecanyouaddyourownPL SQLcodeinrelation-handlingtriggers?（）

A.Before the "End default relation program section" comment. 
B.After the "Begin default relation program section" comment. 
C.Before the "Begin default relation program section" comment. 
D.It is not possible to modify the relation-handling code that Forms automatically creates for relations.

单项选择题Theaccountingmanagerwantsyoutocreateaformthatwhenqueriedwilldisplayacalculatedtotalofyear-to-dateactualexpendituresforthefoundcodeentered.Thevaluesneededtogeneratethissummarydataarestoredinmultipletables.WhichdatasourcetypecanyouassigntothedatablockforthisformwithouthavingtheDBAcreateadatabaseobject?（）

A.database table 
B.transactional trigger 
C.stored procedure 
D.FROM clause query 
E.client-side procedure