SAP ABAP Developer

What are internal tables? What is the difference between Standard, Sorted, and Hashed tables? What are Smart Forms? What is a BAPI? What is an ALV report? What is the difference between TYPE and LIKE? What are field symbols? What is a Function Module? What are select-options? What is a transparent table? What is a lock object? What are conversion exits? What is a data dictionary? What are secondary indexes? Explain a report you developed.