⟩ What are internal tables? How do you get the number of lines in an internal table? How to use a specific number occurs statement?
1) It is a standard data type object, which exists only during the runtime of the program. They are used to perform table calculations on subsets of database tables and for re-organizing the contents of database tables according to users need.
2) Using SY-DBCNT.
3) The number of memory allocations the system need to allocate for the next record population.