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What is software maintenance explain its types in software engin?
Wiki User
∙ 10y ago
Software Maintenance : is the activity of modifying the software product after delivery ; in order to correct faults, improve performance and to improve other attributes ( attributes of a good software ) .
Software maintenance is a vital element in SDLC . Normally and more often done by the developers / or software maintainers ( of the software service provider / the software company ) .
Types of software maintenance : there were only three few years back, but present there are FOUR ( 4 ) types of software maintenance types / kinds are defined .
- Corrective Maintenance - corrective maintenance means a REACTIVE modification, done in the software product after the delivery . The purpose of corrective maintenance is to correct / or fix discovered ( or user reported ) problems in the system .
- Adaptive Maintenance - adaptive maintenance is also a modification done after delivery, in order to keep the software product usable in changing ( or changed ) environments / business environments . If this is not done properly by the time of change, business opportunities will be lost .
- Perfective Maintenance - a software should be efficient / less resource consuming / and should be easy to cope with . Perfective maintenance is done in order to improve the software performance ( after a change in the software or / the environment, the performance of the software changes ) . Also improving the maintainability is a concern .
- Preventive Maintenance - of course as it sounds, it's just PREVENTING . Preventive Maintenance is done, to detect and correct latent ( not developed ) faults before they become effective faults . This simply means the prevention of future problems .
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EXTRA READING :
Software maintenance sounds like, " ONLY ERROR CORRECTING ", but IT'S NOT that . 80% of the software maintenance is NON - CORRECTIVE activities ( activities which are not used to correct faults, but for other purposes ) . However, software maintenance issues can be seen in two perspectives, one is managerial issues and the other is technical issues . Managerial issues can be alignment with customer priorities, managing the staff, estimations . Technical issues may be limited understanding, impact analysis and testing .
In software maintenance, SOFTWARE MAINTENANCE PLAN and SOFTWARE MAINTENANCE PROCESS are also KEY considerations . Software maintenance plan is the pre planning which should be very accurate ( this plan includes about user's requirement changes / or change requests, budget etc ) . Software maintenance process is the sequence of steps followed during the software maintenance process . which includes,
- Implementation Process
- Problem and modification analysis process
- Process acceptance of the modification
- The migration process
- Last maintenance process
- etc ...
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Aurelia Rohan
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