31. What is a Constructor in ABAP OO?
Instance constructor: METHOD constructor.
Static constructor: CLASS_CONSTRUCTOR.
32. What is Polymorphism?
Same method name, different behavior via redefinition.
33. What is an Interface?
Contract containing method signatures without implementation.
34. What is an Abstract Class?
Class with abstract methods; cannot be instantiated.
35. What is T-Code SE11?
Data Dictionary – create/modify tables, views, data elements, domains.
36. What is T-Code SE38?
ABAP Editor – create reports/programs.
37. What is T-Code SE80?
Object Navigator – complete development environment.
38. What are Table Buffers?
Data cached in memory to speed up reads (single, generic, full buffering).
39. What is Secondary Index?
Custom index created to speed up search on non-key fields.
40. What are Field Symbols?
Pointers to memory locations used for dynamic data handling.