- Waterfall Model the tester role will take place only in the test phase
- Waterfall madel is a fixed process u can't make any changes in the requirement or in any phase
- waterfall model used only the requirements are fixed
V-Model: In this model all phases will be done correspondently development and testing. - V-Model role will take place in the requirement phase itself
- V-Model u can make any changes in the requirements
- V-model is the simultaneous process but it is not in case of water fall model
- V-model can be used for the any type of requirement(Uncertain requirement)
Waterfall Model: It includes all phases of SDLC but the drawback is once requirement made freezed it cannot be changed.
