Abap course chapter 1 introduction and first program

ABAP Course

Chapter 1 – Introduction and first
program

Lecturer: André Bögelsack, UCC Technische Universität München
Author: Valentin Nicolescu, André Bögelsack
ABAP Course André Bögelsack, Valentin Nicolescu 1

Copyright 2008 UCC TU München
All rights reserved
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Agenda

1. Introduction to ABAP
2. The use of ABAP in SAP systems
3. Development prerequisites
4. First program ‚Hello World!‘ + Exercise
5. Online help for ABAP


What is ABAP?

• ABAP = Advanced Business Application Programming
• Similarities with Cobol and Pascal
• Established in 1980
• Since 1998 object oriented ABAP objects established
• Fully compatible to older versions
• Multilanguage support
• Embedded SQL statements
• Platform independent
• Database independent
• Reusability of code fragments


Historical view on ABAP
1950 Machine code
….
Assembler

1954 Fortran Cobol
LISP
PL1
….

1968 Smalltalk Pascal
….

1980 ABAP
C++
….

Java

1992 ABAP Objects

Source: Following SAP AG

Compiling ABAP
Presentation
SAPGui SAPGui SAPGui
layer
Calls program Short message
Runs program
for the first time about compiling

Application
Application Application Application
layer
server server server

Compiling
Database Database Database
Database
server server server
layer
Program has to Return compilation
be compiled

ABAP ABAP
Source Compilation
code Source: Following SAP AG

ABAP Repository
Client 900 Client 901

Application Application
data data
User User
accounts accounts
Client dependent Client dependent
Customizing Customizing

Client independent customizing

Repository (tables, programs, function groups …)
Divided into development classes

FI CO PP TR PS PY BC KM PA FS …
Source: Own illustration

Prerequisites for ABAP development

1. Access to repository (is maintained in client settings)
2. User with development profile and access key
3. Own package and own transport request
4. Pay attention to the namespaces



1. Access to repository (is maintained in client settings)
– Access to repository is needed
– Check access in transaction SCC4



2. User with development profile and access key
– The access key allows development of new programs or
changes to existing one
– Access key are always username dependent!
– Access keys must be requested from SAP as license cost
increase by the number of development users
– Access keys can be obtained from your local UCC



3. Own package and own transport request
– Own packages enable you to group your developments
– Transport requests enable you to transport new developments
to other SAP systems
– You may develop new programs using the local package $TMP,
but transport of these developments is not possible



4. Pay attention to the namespaces
– Only use namespace Y and Z, e.g. ZZ_* or YY_* as these are
customer namespaces
– SAP uses namespace from A to X for own programs and
implementations
– Changing SAP objects is not possible unless you have a
modification key


Transport of ABAP developments

Development Quality Assurance Production
System (DEV) System (QAS) System (PROD)


• Developments are transported from DEV to QAS using transport
requests
• Exporting transport requests creates files for transportation
• You may either import all or only one transport request in your
destination system


Transport hierarchy

Project

Transport Transport Transport
request request request

Task Task Task Task Task Task

Developer Developer Developer Developer Developer


Transport requests in repository
Client 900 Client 901

Application Application
data data
User User
accounts accounts
Client dependent Client dependent
Customizing Customizing

Client independent customizing

Transport request 1

Transport request 2
FI CO PP TR PS HR BC KM PA FS …

Transport requests: releasing and
exporting

• Release of transport requests can be done in Transport Manager
TA SE09 or SE10
• First release all tasks, then release transport request
• Tasks have to be released by each developer
• In urgent situations a task can be taken over to complete the
export


The first program: Hello World!

1. Create a new package
2. Create a new transport request
3. Create the new program
4. Enter access key
5. Adjust program attributes
6. Assign program to package
7. Save, check and activate program
8. Release and export new program


Online help for ABAP

• ABAP help
(http://help.sap.com/saphelp_nw04/helpdata/de/d3/2e974d35c51
1d1829f0000e829fbfe/frameset.htm)
• SAP marketplace (www.service.sap.com)
• SAP Community Network (www.sdn.sap.com)
• Transaction ABAPDOCU
• Books:
– ABAP-Objects, SAP PRESS, ISBN-13: 978-1592290796
– The Official ABAP Reference, SAP PRESS, ISBN-13: 978-
1592290390


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