Question - What is the basic difference internal tables and database tables? How can we differentiate by looking at the tables? Handling of internal tables 
          
        
        Answer - 
        The basic difference is database tables are stored in DB server 
and the internal tables are virtual tables these are created run time only 
Internal tables are created dynamically, the memory of internal tables is not 
permant memory, for internal tables the memory will be created in the application server and it is external memory and terminates after the program termination.