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.
