WHAT IS ABAP ?


SAP will run applications written using ABAP/4 .ABAP stands for Advanced Business Application Programming. Here /4 refers to Fourth generation language (4GLs) first developed in the 1980s.
All ABAP programs should start with 'Y' or 'Z'. This is a rule imposed by SAP. SAP reserves all the other programs that start with A-X as standard programs. Users are allowed to create programs starting with Y or Z.

A-X : STANDARD PROGRAM
Y-Z : CUSTOM GENERATED PROGRAM

Generally we create program adding functionality to existing standard program.

For standalone programs we use ABAP editor. The t-code for it is SE38.        T-code stands for transaction code which provide a short cut key for easy access.

There are around more than 70 standard t-code. We can also create our own t-code that we will  see later.

Some of t-codes are :

SE38 : ABAP EDITOR
SE11 : DATA DICTIONARY
SE16 : DATA BROWSER
SE37 : FUNCTION BUILDER
SE93 : MAINTAIN TRANSACTION

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