SAP R/3 is also Called as ERP (Enterprise Resource Planning)software produced by Former IBM Employees. It is an enterprise-wide information system designed to use in all the Global level Enterprise Resource planning Concerns.
It's been used in nearly 44 % of the world's ERP software using companies.
SAP Releases
• SAP R/3 Release 3.1I
• SAP R/3 Release 4.0B Release Date June 1998
• SAP R/3 Release 4.5B Release Date March 1999• SAP R/3 Release 4.6A Release Date 1999
• SAP R/3 Release 4.6B Release Date Dec 1999
• SAP R/3 Release 4.6C Release Date April 2001
• SAP R/3 Enterprise Release 4.70 Release Date March- Dec 2003
• SAP R/3 Enterprise Edition 4.7
• SAP R/3 Enterprise Core Component 5.0
• SAP R/3 Enterprise Core Component 6.0• SAP R/3 ENTERPRISE PORTAL 7.0
The newest version of the suite is MySAP 2007 or SAP ECC 7.0.
Technology
SAP based the architecture of R/3 on a three-tier client/server model.
1. Presentation Server(GUI)
2. Application Server3. Database Server
SAP ERP is differing from R/3 mainly because it is based on SAP Netweaver: core components can be implemented in ABAP and in JAVA and new functional areas are closely interconnected constituents.
Presentation Server
The presentation server is actually a program named sapgui.exe. It is usually installed on a user's System. To start it, the user double-clicks on an icon on the desktop or chooses a menu path. Than presentation server will displays the R/3 menus for SAP. This small window is commonly known as the SAPGUI, or the user interface. The user interface accepts input from the user in the form of keyboard, mouse, and function keys, and sends these requests to the application server to be processed. The application server sends the results back to the SAPGUI which then formats the output for display to the user.
Application Server
An application server is a Backend Programs that collectively interpret the ABAP/4 (Advanced Business Application Programming / 4th Generation) programs and generate output for them. When an application server is started, these executables all start at the same time. When an application server is stopped, they all shut down together.
The Application layer consists of one or more application servers and a message server. Each application server contains a set of services used to run the R/3 system. Not practical, only one application server is needed to run an R/3 system. But in practice, the services are distributed across more than one application server. This means that not all application servers will provide the full range of services. The message server is responsible for communication between the application servers. It passes requests from one application server to another within the system. It also contains information about application server groups and the current load balancing within them. It uses this information to choose an appropriate server when a user logs onto the system.
If your ABAP/4 program requests information from the database, the application server will format the request and send it to the database server.cvb.
Database Server
Database Server. This handles the user's request for Change (addition, retrieval and modifications) in the data. It is also responsible for maintaining Duplicity.
It's been used in nearly 44 % of the world's ERP software using companies.
SAP Releases
• SAP R/3 Release 3.1I
• SAP R/3 Release 4.0B Release Date June 1998
• SAP R/3 Release 4.5B Release Date March 1999• SAP R/3 Release 4.6A Release Date 1999
• SAP R/3 Release 4.6B Release Date Dec 1999
• SAP R/3 Release 4.6C Release Date April 2001
• SAP R/3 Enterprise Release 4.70 Release Date March- Dec 2003
• SAP R/3 Enterprise Edition 4.7
• SAP R/3 Enterprise Core Component 5.0
• SAP R/3 Enterprise Core Component 6.0• SAP R/3 ENTERPRISE PORTAL 7.0
The newest version of the suite is MySAP 2007 or SAP ECC 7.0.
Technology
SAP based the architecture of R/3 on a three-tier client/server model.
1. Presentation Server(GUI)
2. Application Server3. Database Server
SAP ERP is differing from R/3 mainly because it is based on SAP Netweaver: core components can be implemented in ABAP and in JAVA and new functional areas are closely interconnected constituents.
Presentation Server
The presentation server is actually a program named sapgui.exe. It is usually installed on a user's System. To start it, the user double-clicks on an icon on the desktop or chooses a menu path. Than presentation server will displays the R/3 menus for SAP. This small window is commonly known as the SAPGUI, or the user interface. The user interface accepts input from the user in the form of keyboard, mouse, and function keys, and sends these requests to the application server to be processed. The application server sends the results back to the SAPGUI which then formats the output for display to the user.
Application Server
An application server is a Backend Programs that collectively interpret the ABAP/4 (Advanced Business Application Programming / 4th Generation) programs and generate output for them. When an application server is started, these executables all start at the same time. When an application server is stopped, they all shut down together.
The Application layer consists of one or more application servers and a message server. Each application server contains a set of services used to run the R/3 system. Not practical, only one application server is needed to run an R/3 system. But in practice, the services are distributed across more than one application server. This means that not all application servers will provide the full range of services. The message server is responsible for communication between the application servers. It passes requests from one application server to another within the system. It also contains information about application server groups and the current load balancing within them. It uses this information to choose an appropriate server when a user logs onto the system.
If your ABAP/4 program requests information from the database, the application server will format the request and send it to the database server.cvb.
Database Server
Database Server. This handles the user's request for Change (addition, retrieval and modifications) in the data. It is also responsible for maintaining Duplicity.
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