1. V model :
V-model is the most important model that is used in the process of software testing. It is also known as Verification and Validation Model. It is Introduced by the late Paul Rook in 1980s. V-model is a sequential process in which the next phase begins only after the completion of the present phase. In this model, steps don’t move in a linear way while the steps are bent upwards.
2. Incremental Model :
Incremental Model is a model of software development where the product is, analyzed, designed, implemented and tested incrementally until the product is finished. Multiple development cycles take place and these cycles are divided into more smaller modules. Generally a working software in incremental model is produced during first module Each subsequent release of the module adds function to the previous release. In incremental model, process continues till the complete system is achieved.
Difference between V-model and Incremental model :
|S.No.||V MODEL||INCREMENTAL MODEL|
|1.||V model is software development model but development and testing are not concurrent.||Incremental Model is a software development model where the product is, analyzed, designed, implemented and tested incrementally until the product is finished.|
|2.||In V-model testing activities start with the first stage.||Testing is done in incremental model after every iteration of phase.|
|3.||Flexibility of V-model is Little flexible.||Flexibility to change in incremental model is Easy.|
|4.||Cost of V-model is expensive.||Cost of incremental model is also Low.|
|5.||Guarantee of success through V-model is high.||Guarantee of success through Waterfall model is low.|
|6.||In this user involvement is also only in beginning.||In this user Involvement is only at the beginning.|
|7.||It is not iterative.||It is iterative.|
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