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SAP R/3 Architecture Overview

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SAP R/3 Architecture Overview

whether you are going to learn SAP or Started Learning SAP ,you must be know the Overview of SAP Architecture to understand the SAP ERP System work Process and its basic concepts .As a SAP Consult ,your duties are executing and developing SAP Applications ,knowing how your applications are processing in SAP Three Tier System .

What is the 3(three) Tier SAP Architecture

This is the Client-Server Architecture that is three tier(R/3) ,Presentation ,Application and Database Layers which interacts each other to run the SAP Applications .

Three Layers of SAP Architecture
Presentation
Application
Database

R means Real-time system
3 means 3-tier architecture.

SAP 3 Tier(R/3) Architecture Diagram

SAP R/3 Architecture Overview

Functions of SAP Three-tier(R/3) Layers

SAP R/3 Architecture Overview

Presentation Servers

Presentation servers provides a graphical interface That is front-end on which End users and Developers execute and implement Applications of SAP.It is also called as Client and GUI(Graphical User Interface) Layer.
SAP R/3 Architecture Overview

Application Servers

Application servers include specialized systems with multiple CPUs and a vast amount of RAM.
SAP R/3 Architecture Overview

Application Layer is also known as Kernel Layer and Basic Layer and SAP ABAP Programs are executed in Application Layer.It works as a Communication Layer Between Presentation and Database Layers.It is a dispatcher ,distributes the work load to the different work processes to complete the task.

Database Servers

Database servers contain specialized systems with fast and large hard-drives.It stores Data which is about Business Data ,SAP System Data and Tables and SAP ABAP Programs. Example Servers :Oracle, Microsoft SQL Server, IBM DB/2, Siebel, Sybase, etc.
SAP R/3 Architecture Overview

What is a Client?

A client is Part of an SAP R/3 physical database. All functional and Development activities done in SAP R/3 System reserved to certain client.Applications developed by Functional and Technical consultants can be stored as Client dependent or client independent data.
SAP R/3 Architecture Overview


Difference between Client-Dependent Client-Independent Data in SAP

The data in each client may be separate from that of the other clients. There are basically two types of data in an SAP R/3 system − Client-dependent and Client-independent data.
SAP R/3 Architecture Overview

Client-dependent data is defined as data specific to an individual client. 

Client-independent data can be defined as data contained across all clients in the system. 

From this article ,i covered R/3 Architecture which clears the SAP Freshers confusion about SAP Architecture and it gives overview on work process or execution Logic of SAP Language .

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