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The Architecture of an Enterprise System

The Architecture of an Enterprise System. objectives. introduce enterprise system architecture discuss system landscape. SALES & DISTRIBUTION. PRODUCTION. enterprise structure & environment data. HR. operational data. ACCOUNTING. applications. end users. Logical architecture.

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The Architecture of an Enterprise System

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  1. The Architecture of an Enterprise System

  2. objectives • introduce enterprise system architecture • discuss system landscape

  3. SALES & DISTRIBUTION PRODUCTION enterprise structure & environment data HR operational data ACCOUNTING applications end users Logical architecture

  4. Logical architecture of R/3 FI FinancialAcctg. SD Sales CO Controlling MM Materials Mgmt PP ProductionPlanning AM AssetMgmt R/3 BASIS PS ProjectSystem QM Quality Mgmt PM PlantMaint. WF Workflow IS IndustrySolutions HR HumanResources

  5. Open systems approach ALE OLE EDI RFC CPI-C TCP/IP

  6. Tiered configurations Central system Two - tier Three - tier Presentation Presentation processes Presentation processes Application Application processes Database Database processes Database, Database, application, application processes presentation processes

  7. Enterprise system scalability Presentation Application Scalability Database

  8. Database:Contains most objects Database server Organizational structure Data dictionary Log files Transaction Data Master Data Programs Application servers

  9. Dispatcher Work Process Work Process Work Process Application servers:Contain work processes Database server Application server

  10. Dispatcher Work Process Work Process Work Process Application servers:Contain work processes • Work process can be: • Dialog • Batch • Update • Spool • Message • Gateway Messages Server: Coordinates message exchanges between different application servers Gateway Server: Allows the communication between R2, R3, and external systems

  11. System landscape • Attempt to isolate production system from development, testing, and training systems

  12. One system landscape Development Development Testing Quality Assurance End User Training Production Sandbox PRD

  13. Two system landscape Development Production Development Testing PRD Quality Assurance End User Training Sandbox DEV

  14. Three system landscape Quality Assurance End User Training Customizing Master Development QAS Development Testing Sandbox DEV Production PRD

  15. Quality test user training Development Test Production release release release apply apply apply Transport Directory (FIFO Buffer) Transport management • Version management • Import changes in an orderly manner • Apply changes consistently

  16. summary • introduced enterprise system architecture • discussed system landscape

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