ABAP/4: Programming the SAP(R) R/3(R) System

This definitive guide to ABAP/4 aims to make the fundamentals of this evolving programming language accessible to anybody developing or maintaining an SAP R/3 system. Starting with the basic principles, it explains the essential characteristics of ABAP/4 and the SAP programming concept.
With this book you will learn how to master the ABAP/4 commands in order to analyze existing standard applications and write new programs, understand function modules to use program code from other applications, use the Workbench organizer and On-line Debugger to relay applications and document changes, and create your own programs and construct your own test environments with an expansive set of examples designed to build up knowledge and programming skills.