Answer / sonal.pagare

Waterfall Model vs V-Model

In Waterfall Model the tester role will take place only in
the test phase. In V-Model role will take place right from
the requirement phase itself.

Waterfall model is a fixed process that u can't make any
changes in the requirement or in any phase. In V-Model u can
make any change in the requirements.

Waterfall model is a continuous process. V-model is the
simultaneous process.

Waterfall model used only after the requirements are fixed.
V-model can be used for any type of requirement (Uncertain
requirement).

Any mistake in Requirement phase can't be recognized in
water fall model until near the end when customer gets to
see the product. This leads to huge cost of correctives in
terms of economy. So it is time consuming too. Here for each
and every phase of the software life cycle there is a review.

Reduce the probability of occurring a mistake or defect.
Hence saves the cost. It saves time.

Emphasizes the development cycle and ignores the testing
cycle. Testing merely get time as development phase takes
almost 98% of project time. Gives equal importance to the
testing phase as development.

Waterfall model stages:
1.User Requirement
2.System Requirement
3.Global Design
4.Detailed Design
5.Implementation
6.Testing

V model stages:
1.Component testing
2.Integration Testing
3.System Testing
4.Acceptance Testing

Answer / madhu

It is also called as verification and validation model where
both the development activities and testing activities will
start all most all at the same with same
requirements.development team does analysis and development
and testing team does planing,scripting and testing.that
means it is the parallel process of both testing and
development.
In this model testing involves in each every stage of SDLC
to identify the defects as soon as possible in the early
stages and this model we do 2 types testing Static and
Dynamic testing.
Testing involved in customer requirements,system
requirements,design and coding will come under static
testing.where as testing involved in Unit
testing,integration testing,System testing and UAT will come
under Dynamic testing.

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