i)Perfective maintenance:It is a change to perfect a system i.e. improve its performance in terms of response time to user request or to amend a system interface to make a system more user friendly.
ii)Adaptive maintenance:Involves changing a system to take account of a change in its functional environment.
iii)Preventive maintenance:Carried out on a system to ensure that it can withstand stress. It helps in ensuring data and software integrity.
iv)Replacive maintenance:It is carried out on a system when a system becomes almost unmaintainable e.g. due to lack of documentation, poor design or age.
v)Corrective maintenance:It is usually a change effected in a system in response to detected problem or error.
Steve ju answered the question on October 10, 2018 at 19:29
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