Software Engineering (2160701)

• In a software lifetime, type of maintenance may vary based on its nature
• It may be just a routine maintenance tasks as some bug discovered by some user or it may be a large event in itself based on maintenance size or nature
• Following are some types of maintenance based on their characteristics
  • Corrective Maintenance
  • Adaptive Maintenance
  • Perfective Maintenance
  • Preventive Maintenance

Corrective Maintenance

• This includes modifications done in order to fix problems
• Corrective maintenance deals with the repair of defects found in day-to-day system functions

Adaptive Maintenance

• This includes modifications applied to keep the software product up-to-date
• Adaptive maintenance is the implementation of changes in a part of the system, which has been affected by a change that occurred in some other part of the system

Perfective Maintenance

• This includes modifications done in order to keep the software usable over long period of time
• It includes new features, new user requirements for refining the software and improve its reliability and performance.
• This includes changing the functionalities of as per the user’s changing needs

Preventive Maintenance

• Modifications to prevent future problems of software
• It aims to attend problems, which are not significant at this moment but may cause serious issues in future
• It comprises documentation updating, code optimization and code restructuring.