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What I have learnt so far (KMS 6143) (System Request (Sources (Top…
What I have learnt so far (KMS 6143)
Intro to Information System
System Theory
many subsystem must work together to ensure the main system work successfully.
used to measure performance, control and communication in each department in the organization.
Computer system
Hardware
Software
System software
Application software
Purpose
Specific
Concept
JD VS JS
Components
Human, Hardware, Data, Software and Process
Categories
Transaction Processing System
Management Information system
Executive Information System
Decision Support System
Office Information System
Expert System
System Request
Structured Approach
easy to understand
System Planning
process of understanding why an information system should be built and HOW to built it
Reason
Improved service
Better performance
More information
Stronger controls
Reduced cost
Sources
Top management
User
External factors
Existing System
System Request Form
Feasibility Analysis
Economical
to know the cost involved, before, during and after.
Technical
to know if the organization has resources to develop or buy, and
operate the system at user locations
Operational Feasibility
to know if the system can be used after it is develop
Evaluating System Request process