Lesson 4 software design

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SOFTWARE MAINTENANCESoftware maintenance is widely accepted part of SDLC nowadays. It stands for all themodifications and updations done after the delivery of software product. There are number ofreasons, why modifications are required, some of them are briefly mentioned below:Market Conditions – Policies, which changes over the time, such as taxation and newlyintroduced constraints like, how to maintain bookkeeping, may trigger need formodification.Client Requirements – Over the time, customer may ask for new features or functions inthe software.Host Modifications – If any of the hardware and/or platform (such as operating system) ofthe target host changes, software changes are needed to keep adaptability.Organization Changes – If there is any business level change at client end, such asreduction of organization strength, acquiring another company, organization venturing intonew business, need to modify in the original software may arise.Types of maintenanceIn a software lifetime, type of maintenance may vary based on its nature. It may be just a routinemaintenance tasks as some bug discovered by some user or it may be a large event in itself basedon maintenance size or nature. Following are some types of maintenance based on theircharacteristics:Corrective Maintenance – This includes modifications and updations done in order tocorrect or fix problems, which are either discovered by user or concluded by user errorre … Purchase document to see full attachment

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