Which data types are incomplete ABAP standard data types? Note: There are 3 correct answers to this question.

You have the following class definition: CLASS ICL_airplane DEFINITION PUBLIC SECTION.
METHODS: set_passengers. PROTECTED SECTION CONSTANTS c_pos type i.methods get_passengers PRIVATE SECTION DATA mv_passengers TYPE I, METHODS set_attributes ENDCALSS. Which components can be addressed directly from a subclass of class ICL_airplane?

A screen has the following PAI flow login: PROCESS AFTER INPUT. FIELD A MODULE check_A FIELD B MODULE Check_b CHAIN FIELD:
C AND D. MODULE check_CD ENDCHAIN CHAIN FIELD: C AND B MODULE check_CB ENDCHAIN. What happens is the application sends a type E message during the check_CB module processing?

What pre-defined ABAP data type is deep?

What type of method is generated automatically by the web Dynpro Explorer when you assign an action to a button UI element?