What is difference between waterfall and v _model?

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Me Myself and QA

  • Sep 26th, 2007
 

Imagine a waterfall going left to right over a high cliff.  Imagine a mirror at the point of impact showing the entire waterfall on the right side.  The same waterfall, but a different view.

Now at each point on this waterfall is a different part of a software project, such as requirements, unit building, system design - whatever you want to put there in the order of software development heading to the bottom of the falls - the completion.  Each of these phases of the project must be mirrored on the other side, the mirror side, with a QA response.  Unit completion must have a Unit Testing, and so on.  As the each phase on the left is planned, so must the QA part on the left.  As each phase on the left is completed, the phase on the right must be completed (in some cases QA and Dev move as one, in others QA follows Dev.)

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