I am having few questions on Basic ABAP Programing
1) Selection Screen:
When i am at selection screen and if i press Cancel, it will take me to the list.For Eg if AT Start of selection, i am selecton data from database and writing to list, so even if user press cancel at selection screen , the query will be executed. How should we handle it?
2) In BDC, what is the exact difference between input session and call transaction. I am able to keep both in sessions and get the logs. I am able to view all the facilities in call transaction that are offered by input session. So, when should we go for waht and what is the exact difference between two.