Jump to content

SAP R/3

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Wispanow (talk | contribs) at 15:40, 14 August 2010 (Old tags, not helpful.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

SAP R/3 is the former name of the main enterprise resource planning software produced by SAP AG. It is an enterprise-wide information system designed to coordinate all the resources, information, and activities needed to complete business processes such as order fulfillment or billing [1].

History of SAP R/3

The first version of SAP's flagship enterprise software was a financial Accounting system named R/1 called as YSR. This was replaced by R/2 at the end of the 1970s. SAP R/2 was in a mainframe based business application software suite that was very successful in the 1980s and early 1990s. It was particularly popular with large multinational European companies who required soft-real-time business applications, with multi-currency and multi-language capabilities built in. With the advent of distributed client–server computing SAP AG brought out a client–server version of the software called SAP R/3 (The "R" was for "Real-time data processing" and 3 was for 3-tier). This new architecture is compatible with multiple platforms and operating systems, such as Microsoft Windows or UNIX. This opened up SAP to a whole new customer base.

SAP R/3 was officially launched on 6 July 1992. It was renamed SAP ERP and later again renamed ECC (ERP Central Component). SAP came to dominate the large business applications market over the next 10 years. SAP ECC 5.0 ERP is the successor of SAP R/3 4.70. The newest version of the suite is MySAP 2007 or SAP ECC 7.0.

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[2]
  • 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

Organization

SAP R/3 was arranged into distinct functional modules, covering the typical functions in place in an organization. The most widely used modules were Financials and Controlling (FICO), Human Resources (HR), Materials Management (MM), Sales & Distribution (SD), and Production Planning (PP)[citation needed].

Each module handled specific business tasks on its own, but was linked to the others where applicable. For instance, an invoice from the billing transaction of Sales & Distribution would pass through to accounting, where it will appear in accounts receivable and cost of goods sold.

SAP typically focused on best practice methodologies for driving its software processes, but more recently expanded into vertical markets. In these situations, SAP produced specialized modules (referred to as IS or Industry Specific) geared toward a particular market segment, such as utilities or retail.

Technology

SAP based the architecture of R/3 on a three-tier client/server model.

  1. Presentation Server(GUI)
  2. Application Server
  3. Database Server

SAP allows the IT supported processing of a multitude of tasks, accruing in a typical company or bank. 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 mostly not anymore created as part of the previous ERP system, with closely interconnected constituents, but as self-contained components or even systems.

Presentation Server

The presentation server is actually a program named sapgui.exe. It is usually installed on a user's workstation. To start it, the user double-clicks on an icon on the desktop or chooses a menu path. When started, the presentation server displays the R/3 menus within a window. This window is commonly known as the SAPGUI, or the user interface (or simply, the interface). The interface accepts input from the user in the form of keystrokes, mouse-clicks, 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 excutables that collectively interpret the ABAP/4 (Advanced Business Application Programming / 4th Generation) programs and manage the input and 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 number of processes that start up when you bring up the application server is defined in a single configuration file called the application server profile. Each application server has a profile that specifies its characteristics when it starts up and while it is running. For example, an application server profile specifies:
• Number of processes and their types
• Amount of memory each process may use
• Length of time a user is inactive before being automatically logged off.

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.

The application server exists to interpret ABAP/4 programs, and they only run there-the programs do not run on the presentation server. An ABAP/4 program can start an executable on the presentation server, but an ABAP/4 program cannot execute there. 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 . The database server handles the user's request for addition, retrieval and modifications in the data. It is also responsible for maintaining Concurrency Control.

See also

References

  1. ^ Esteves, J., and Pastor, J., Enterprise Resource Planning Systems Research: An Annotated Bibliography, Communications of AIS, 7(8) pp. 2-54.
  2. ^ http://itknowledgeexchange.techtarget.com/itanswers/difference-bet-ecc-60-sap-r3-47/
Retrieved from "https://en.wikipedia.org/w/index.php?title=SAP_R/3&oldid=378888701"