The CBIS Model
Computer-based
Information System
(CBIS)
Accounting
Information System
Problem
Decisions
Information
Management
Information System
Decision Support
Systems
Problem
Solution
The Virtual
Office
Knowledge-based
Systems
1-1
Information Services
Information specialists have
full-time responsibility for
developing and maintaining
computer-based systems
1-2
Traditional Communication Chain
Database
Administrator
User
Systems
Analyst
Programmer
Operator
Computer
Network
Specialist
1-3
End-User Computing (EUC)
• End-user computing
– Development of all or part of applications
– Information specialists act as consultants
• Stimulants to EUC
– Increased computer literacy
– IS backlog
– Low-cost hardware (the PC)
– Prewritten software (electronic
spreadsheets)
1-4
IS and EUC
The End-User Computing
Communication Chain
Information
Specialists
Support
Communication
User
Computer
1-5
Justifying the CBIS
• Justify in the same manner as any
other large investment
• Economic
– Cost reduction
– Reduced inventory investment
– Increased productivity (CAD/CAM)
• Noneconomic
– Perceived value
1-6
Achieving the CBIS
1-7
Reengineering the CBIS
• Business Process Reengineering (BPR)
– Reworking systems
– Good system features retained
– Becoming development methodology of
choice
1-8