The architecture of an enterprise system
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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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The architecture of an enterprise system

The Architecture of an Enterprise System


Objectives

objectives

  • introduce enterprise system architecture

  • discuss system landscape


Logical architecture

SALES &

DISTRIBUTION

PRODUCTION

enterprise

structure

&

environment

data

HR

operational

data

ACCOUNTING

applications

end users

Logical architecture


Logical architecture of r 3

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


Open systems approach

Open systems approach

ALE

OLE

EDI

RFC

CPI-C

TCP/IP


Tiered configurations

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


Enterprise system scalability

Enterprise system scalability

Presentation

Application

Scalability

Database


Database contains most objects

Database:Contains most objects

Database server

Organizational

structure

Data dictionary

Log files

Transaction Data

Master Data

Programs

Application servers


Application servers contain work processes

Dispatcher

Work

Process

Work

Process

Work

Process

Application servers:Contain work processes

Database server

Application server


Application servers contain work processes1

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


System landscape

System landscape

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


One system landscape

One system landscape

Development

Development Testing

Quality Assurance

End User Training

Production

Sandbox

PRD


Two system landscape

Two system landscape

Development

Production

Development Testing

PRD

Quality Assurance

End User Training

Sandbox

DEV


Three system landscape

Three system landscape

Quality Assurance

End User Training

Customizing Master

Development

QAS

Development Testing

Sandbox

DEV

Production

PRD


Transport management

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


Summary

summary

  • introduced enterprise system architecture

  • discussed system landscape


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