Question

Difference between prototype model and incremental development model

Answer 1

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Prototype Model:

 Prototype model is that instead of freezing the requirements before a design or coding can proceed, a throwaway prototype is built to understand the requirements.

This prototype is developed based on the currently known requirements.

Prototype model is a software development model.


Advantages:

Users are actively involved in the development.

Since in this methodology a working model of the system is provided, the users get a better understanding of the system being developed.

Errors can be detected much earlier.Quicker user feedback is available leading to better solutions.

Missing functionality can be identified easily.

Confusing or difficult functions can be identified as Requirements validation, Quick implementation of, incomplete, but functional, application.


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Incremental: 

In incremental model the whole requirement is divided into various builds.

Multiple development cycles take place here, making the life cycle a “multi-waterfall” cycle.

Cycles are divided up into smaller, more easily managed modules. Incremental model is a type of software development model like V-model, Agile model etc.


Advantages:
Generates working software quickly and early during the software life cycle.

This model is more flexible – less costly to change scope and requirements.

It is easier to test and debug during a smaller iteration.

In this model customer can respond to each built.

Lowers initial delivery cost.Easier to manage risk because risky pieces are identified and handled during it’d iteration.



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Answer 2

Prototype Model vs Incremental Development Model

Prototype Model

• It is an iterative model.
• Once a state is completed , based on the feedback from the user changes are made accordingly that is it moves progressively.
• Requirements can be updated.

Incremental Development Model

• It divides the overall process into smaller functionalities or modules and work on them separately.
• All the requirements are to be gathered before-hand.