You create a multiple form application- Which built-in must you use to invoke the form modules to enable you to programmatically control navigation between the multiple forms in your application?（）

A.The data entered into the called form is logically independent of the data entered in the calling form. 
B.The called form requires different privileges than the calling form. 
C.The called form must execute as a different user than the calling form. 
D.The calling form must be able to query data in the called form before it is saved.

A.To pass data to a pop-up menu. 
B.To populate a base table block. 
C.To pass data to other form modules. 
D.To pass data to other Oracle products. 
E.To dynamically construct SELECT statements. 
F.To server as the source for a FROM clause query. 

A.An object type is a user-defined composite data type. 
B.The attributes of an object type can be those of other object types. 
C.A PL/SQL table of records is an example of a nested object type. 
D.An object type must be declared as a type before the actual object itself can be declared.