V Model is not a Testing Model for ur knowledge..Bt its a Application Development Model..Like...
6.Iterative Model and son on...These are system development model..not a Testing a Model...
Manish Pls elaborate do u want to knw abt all these models or something else..
Actually the testing model selection is vary from project to project...
regarding to the domain of the project the model selection takes place..
but...Agile testing in V-Model is widely used and prefered model..