Hi,
ABAP itself is Advanced Business Application Programming
it is Fourth generation Language
Multi Lingual
Only Tool for developing SAP applications.
ABAP Workbench contains all tools, we need to create ABAP/4 Programs.
ABAP/4 program contains all usual control structures and modularization concepts.
After coding, we will save and generate. During generation, the system creates a Run Time object. When we execute, the system executes this Run Time Object.
These are different from sequential programming languages such as FORTRAN, PASCAL and C.
Instead it shares certain features with event Oriented programming languages such as VB and JAVA.
An ABAP/4 program has modular structure.
Source text (processing Block) always consists, Collection of One or more programming modules .
Programming module consists of sequential statements.
With in the processing Block, we can use general Control statements such as DO, IF, WHILE and CASE statements.
For Execution of ABAP/4 Programs you need a special Run Time Environment .
This Run Time Environment is responsible for calling the individual program modules one after the other .
This Run Time Environment is nothing but ABAP/4 Processor .
Declarative Elements for declaring Data.
Operational Elements for Manipulating data.
Control statements for processing program flow.
Functions for processing character strings.
Subroutines with or without passing values.
Central Library with special type of Subroutines called Function modules.
Open SQL (a subset of SQL) to read and change data base tables.
Allows you to define and process Internal Tables.
Allows you to store data as Sequential files on Application and Presentation Servers.
Executable program (1)
INCLUDE program (I)
Module pool (M)
Function group (F)
Subroutine pool (S)
SAP differentiates between two general types of ABAP/4 Programs.
Report Programs
Dialog Programs
link:
http://help.sap.com/saphelp_nw04s/helpdata/en/63/0b9841e2ebb05fe10000000a1550b0/frameset.htm
http://abap4.tripod.com/SAP_and_ABAP_Links.html
HOPE I ANSWERED TO UR POINT
thanks and regards
suma sailaja
Edited by: suma sailaja pvn on Jan 10, 2008 5:03 AM
Edited by: suma sailaja pvn on Jan 10, 2008 5:06 AM
Bluesky
