lecture01 abap on line

Lecture 1Introduction to SAP, Development Workbench

and ABAP

BCO5647 Applications Programming Techniques (ABAP)

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Readings & Objectives

Readings

Keller & Kruger Chapter 3Section 3.1 & 3.2

Objectives

This lecture will

Introduce the SAP company and ERP Systems

Examine the architecture of an SAP System

Introduce the ABAP programming language

Examine the ABAP runtime environment

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What is SAP ?

SAP R/3 is a set of business application software modules designed for the client/server environment.

The modules are integrated, and span most functions required by a major corporation, including manufacturing, finance, sales and distribution, and human resources.

Each module addresses over 1000 business processes.

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What are ERP Systems?

ERP systems are the result of business process engineering.

They are information systems that facilitate the flow of information between all functions within a business.

They organise and execute the millions of transactions that are fundamental to many large businesses.

One huge database for storing transaction data.

Eliminate many of the existing legacy systems.

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Features of ERP (SAP)

Reduce inter-processing time (transactions occur one time at the source);

Maintain an audit trail of all transactions;

Utilises a common database;

Perform internal conversions automatically (tax, foreign currency, legal rules for payroll);

Improve customer service by putting data at the fingertips of employees;

Involve employees in the entire functional cycle;

Open system (SAP).

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Features of SAP

SAP’s Modules

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mySAP ERP & SAP R/3 Enterprise

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SAP Netweaver

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SAP Basis System

SAP Basis is the central “operating system” that ensures that all application modules are integrated and platform-independent.

Its features include : An architecture specially suited for client/server configurations.

The ability to utilize relational databases.

A graphical user interface.

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Client/Server Architecture

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ABAP Program

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Interaction between Server Layers

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R/3 Repository

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ABAP Development Workbench Tools

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The Development Workbench

The ABAP Development Workbench is an integrated set of fourth-generation tools which allows the development and implementation of client/server applications, or modification of the existing, standard R/3 modules.

It includes a repository, editor and dictionary, as well as tools for testing, tuning and debugging, and optimising performance.

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Features of the ABAP language

Advanced Business Application Programming:

Is a interpretative 4 GL which supports structured programming and modularisation.

Has been enhanced as an object-oriented language.

Is capable of handling multi- language applications.

Fully integrates an SQL standard.

Is platform-independent.

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General ABAP Syntax I

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General ABAP Syntax II

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Programming an Application

ABAP Programs can be :

Reports - a program that reads and analyses data in database tables without changing the database.

Dialog programs - allow you to work interactively with the system and to change the contents of tables. Each program has a certain sequence of screens.

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Transporting Developments

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SAP Query & QuickViewer

SAP Query and QuickViewer are tools that enable you to generate a report without the need to write a program.

It is intended for users with no programming knowledge.

The user can select the database table fields required for the report and define the formatting and type of processing.

When the Query or QuickView is started a report generator creates a report based on the user’s field selections and format requirements.

QuickViewer is quick and not as complex as SAP Query.