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According to Cem Kaner The full business from initial thinking to final use is called the products life cycle A life cycle is the sequence in which a project specifies prototypes designs implements tests and maintains a piece of software Explicit recognition of a life cycle encourages development teams to address development issues at the appropriate time for example to establish basic software requirements before design or coding begins We recommend that developers roughly follow the staged delivery model below when designing significantly new versions of the full model and when developing large components and libraries So apropos of software life cycle at beginning we can give the definition about it It can help us to understand clearly during reading this essay The software life cycle is a general model of the software development process including all the activities and work products required to develop a software system It is important task of software engineering which is the profession concerned with creating and maintaining software applications by applying software engineering technologies and practices Software Life-cycle phases The phases a software product goes through between when it is conceived and when it is no longer available for use The software life-cycle typically includes the following 1 Requirements Determine user needs 2 Specification Design Software Externals 3 Design Design Software Internals 4 Implementation Build the Software 5 Testing Determine Product Quality 6 Maintenance Use Fix Evolve Product During these 6 phases their product will differentRequirement Specification Design will work out some doucuments and the Implementation step will produce the softwareTesting must need some report and Maintenance also work out some documents to announce some errorsand some time will produce some software which normally named service pack The development process tends to run iteratively through these phases rather than linearly several models I will list belowhave been proposed to describe this process Software development models Firstly the software development models goal is
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