Product Group of SAP- R/2 and R/3 systems

# Product group of SAP :
1. R/2
2. R/3

1. SAP R/2 was the first compact software package for the whole spectrum of business applications from the SAP corporation. SAP R/2 runs on mainframes, especially IBM, BS2000 (Siemens machines).

2. SAP R/3 is the continuation of R/2 on client/server and distributed open systems. SAP R/3 was designed for open systems, e.g. UNIX. It runs on most types of UNIX, on Windows NT and OS/400.

 

-->    SAP R/3 is based on a client /server architecture that uses a relational data base to track all info.related to corporation . R/3 gathers related transactions that deal with the same area of business functionalities. There are modules for materials, financial , human resources,sales & other common business functions.

SAP R/3 Architecture :
SAP R/3 is divided into three layers as follows :

1. Presentation Layer : Software components that specialize in interacting with end users. System provides GUI (Graphic User Interface), receives output from Application layer, reformats the data and presents textual and graphic data.

2. Application layer : Software components that specialize in processing business applications, uses application logic of SAP programs to collect and process requests.

3. Database layer : Software components that specialize in management, storage & retrieval of data. This layer resides in database server with specialised systems with fast and large drives.

R/3 System (click to view larger image)