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MIS CONCEPTS
What is MIS?
Short for Management Information System
MIS refers broadly to a computer-based
system that provides managers with the tools
for organizing, evaluating and efficiently
running their departments.
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Management Information System
Management, Information and System hasthree sub-components,together bringout the focus clearly & effectively.
System emphasizing a fair degree ofintegration and a holistic view;
Information stressing on processed datain the context in which it is used by end
users; Management focusing on the ultimate
use of such information systems formanagerial decision making.
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What is a System?
Systems are created to solveproblems.
Systems approach is an organized
way of dealing with a problem.
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Defining a System
A collection of components that worktogether to realize some objectiveforms a system
Three Major Components
Input Output
Processing
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Fox Example
Human body - a complete natural
system.
National systems - political system,
economic system, educational system
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PHASES OF SDLC
System Study
FeasibilityStudy
SystemAnalysis
System Design
Coding
Testing
Implementation
Mianaince
SoftwareDevelopmen
tLife Cycle
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SYSTEM STUDY:
Problem identification and project
initiation background analysis
inference or findings
Feasibility Study:
Workability,
Meeting users requirements,
Effective use of resources
Cost effectiveness.
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System Analysis
Specification of the new system
Functional hierarchy
Identify Data items
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System Design
Preliminary or general design Structure or detailed design
Tools and techniques used for designing:
Flowchart Data flow diagram (DFDs)
Data dictionary
Structured English
Decision table
Decision tree
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Coding
Coding the new system into computerprogramming language.
Defined procedures transformed intocontrol specifications
Programming phase computer
instructions.
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Testing
A test run of the system
Unit testing
System testing
Black box testing
White box testing
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Implementation
Theory is turned into practice
Parallel run
Pilot run
User training
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Maintenance
The review of the system is done for:
knowing the required changes or
the additional requirements
studying the performance
If a major change to a system isneeded, a new project is set up to
carry out the change. The new projectwill then proceed through all the abovelife cycle phases.