文档介绍：低碳出行,绿色你我Title57
Batch TPS
Originally, the only available option
Transactions accumulated over period of time
Timeocessing in case of disaster?
Audit
Can you verify the integrity of the system?
How will you know if transactions are not processed or are processed incorrectly?
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MIS 175 Spring 2019 Chapter 9MIS 221
Enterprise Resource Planning Systems
Key word is Enterprise: solution designed for entire enterprise
All processes organized around one enterprise-wide data model
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MIS 175 Spring 2019 Chapter 9MIS 221
Advantages of ERP
Elimination of costly legacy systems
Old systems are expensive to maintain and reduce business agility
Improvement of processes
ERP may have implemented best-in-class processes
Improve data access and data integrity
Provide complete, consistent view of enterprise data
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MIS 175 Spring 2019 Chapter 9MIS 221
Disadvantages of ERP
Implementation cost
Software and hardware
Expertise
Opportunity costs
Time to implementation
Lengthy and difficult process
MOC (management of change) challenges
System integration difficulties
Vendor dependence
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MIS 175 Spring 2019 Chapter 9MIS 221
Current ERP Vendors
SAP
Baan
PeopleSoft
Oracle
J. D. Edwards
Manugistics
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MIS 175 Spring 2019 Chapter 9MIS 221
R/3 Architecture
Functionally rich
More functional options than a business will ever need
Logical
Built around information model
10,000 tables
Control tables
Application data tables
Heavily parameterized
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MIS 175 Spring 2019 Chapter 9MIS 221
R/3 Architecture (con’t)
Hardware
PC Clients
Application server
Database server
Public interfaces
BAPI
Customization
ABAP Development System
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MIS 175 Spring 2019 Chapter 9MIS 221
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