Prototype Model is used when high level user involvement required,like for online systems,web applications,systems requiring good interface,and when our customer don't know the functionality of software.
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Prototype model is the best way to understand customer's requirements. A prototype is re- generated until it meets the expectations of the user
In Prototyping model instead of the end product a prototype is made. Advantage of prototype is that it helps in gathering and refining of requirements.
Prototyping model is one of the software development life cycle model. In this we prepare a prototype before the actual product.
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