9/29/2012

SAP ABAP Interview Question

what is the use of ENQUEUE?
Generate a Lock Entry in LOck Table.
what is the use of DEQUEUE?
Remove a Lock Entry from LOck Table.
How many types of Lock in SAP?
Share Lock:
It is a Read only Lock.
It prevents data from being changed while  user is reading it.
Exclusive Lock:
It is a write Lock.
It prevents data from being changed while  used is already modifying it.


Define BADI?
BADI -- Business add-in.
BADI's are New concept that make use of ABAP Object Technology.
This is true Object oriented approach to SAP enhancements using Classes,Interfaces and Methodsto Implement the BADI.

types of views in ABAP


  • ·        Database Views.
  • ·        Projection views.
  • ·        Help Views.
  • ·        Maintenance view.