System Analysis (Part 3)

System Control and ReviewSystem Maintenance

Maintenance

Implementation

Design

Analysis

System Development Life Cycle 1) Project Selection and Feasibility Study

2) Present System study and Analysis

3) System Design of the New System

4) Programming and Documentation

5) Implementation and Change Over

6) System Control and Review

7) System Maintenance

Maintenance This is the stage where the

systems is checked

This stage is used to make sure the system works as it should

If the System Analyst did a good job there should be no problems

System Control and Review

After the system has been running for some time the system analyst checks the system

He/she would compare expected performance with actual performance

This acts as a check up of the whole system

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How is this done?The system analyst could

either;

1. Ask the users of the system for a report on the way the system works and if they feel it is better than the previous system

2. Testing the system by trying out different inputs to check if the outputs are as expected

System Maintenance This stage is a VERY important stage

of system analysis

This is an on going stage that never ends

System maintenance keeps the system updated and free of any errors

If any bottlenecks and failures are found they are fixed right away

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Why maintain a system?System maintenance is done to;

1. Address problems that were not dealt with before

2. Updating the system when;A. the amount of data increases, B. the system is to be used in a new area C. the data needs to be processed in a different way

3. Replace old computer hardware4. Adding new updated features to

the system