Internal table is a very important concept in ABAP/4 programming. For a novice programmer, it is essential that He / She understands the underlying concept of internal table. This documentation explains internal table in a very precise and in simple words. It explains from the basics of an internal table and gradually navigating to its features and operations.
In this document it is explained Standard, Sorted and Hashed tables and its operations separately and in the respective order.You will get a clear understanding of Standard Table first and practice and then move to Sorted and Hashed Tables.