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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.