The Architecture of an Enterprise System

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The Architecture of an Enterprise System
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objectives

• introduce enterprise system architecture
• discuss system landscape

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Logical architecture
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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
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Open systems approach
ALE
OLE
EDI
RFC
CPI-C
TCP/IP
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Tiered configurations
Central system
Two
-
tier
Three
-
tier
Presentation
Presentation processes
Presentation processes
Application
Application processes
Database
Database processes
Database, application,
Database,
presentation processes
application processes
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Enterprise system scalability
Presentation
Application
Scalability
Database
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DatabaseContains most objects
Database server
Organizational structure
Data dictionary
Log files
Transaction Data
Master Data
Programs
Application servers
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Application serversContain work processes
Database server
Application server
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Application serversContain 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
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System landscape

• Attempt to isolate production system from
  development, testing, and training systems

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One system landscape
Development
Development Testing
Quality Assurance
End User Training
Production
Sandbox
PRD
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Two system landscape
Development
Production
Development Testing
PRD
Quality Assurance
End User Training
Sandbox
DEV
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Three system landscape
Quality Assurance
End User Training
Customizing Master
Development
QAS
Development Testing
Sandbox
DEV
Production
PRD
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Transport management

• Version management
• Import changes in an orderly manner
• Apply changes consistently

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summary

• introduced enterprise system architecture
• discussed system landscape