Write short notes on Information system maintenance

A Management Information System ICT Revision Questions and Answers

Information System maintenance is an important aspect of System Development Life Cycle. Most information systems require at least some modification after development. The need for modification arises from a failure to anticipate all requirements during system design and or from changing organizational requirement. Maintenance can be categories in the following ways;
• Scheduled maintenance
• Rescue maintenance
• Corrective maintenance

• Adaptive maintenance
• Perfective maintenance
• Preventive maintenance

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