1. What are interface/conversion programs in SAP? 

2. What are internal tables? How do you get the number of lines in an internal table? How to use a specific number occurs statement? 

3. What are match codes? Describe? 

4. What are ranges? What are number ranges? 

5. What are select options and what is the diff from parameters? 

6. What are selection texts? 

7. What are the different types of data dictionary objects? 

8. What are the domains and data elements? 

9. What are the events in ABAP language? 

10. What are the exceptions in function module? 

11. What are the fields in a BDC_Tab Table? 

12. What are the problems in processing batch input sessions? How is batch input process different from processing on line? 

13. What do you define in the domain and data element? 

14. What does an EXEC SQL stmt do in ABAP? What is the disadvantage of using it? 

15. What does an extract statement do in the ABAP program?