12 Working with Function Module in SAP BW / ABAP Part 1

Why do we use Function Modules in BW
Understanding of Standard Function Modules design
How to execute Function Module
How to call/use Function Module in Custom Programs
Important points to be noted while using Function Modules
Understanding in what scenarios we get ST22 dump while using Function Module

[shanthirajan]

Hello, i have a doubt, Is there any difference between abap and bw abap