Day-2 SDLC and Models(Raaji) SDLC And its Models: What is SDLC and Various stages? Different SDLC Models Waterfall Model – What , When , Advantage & drawback V Model – What , When (more…) This content is restricted to site members. If you are an existing user, please log in. New users may register here. Existing Users Log InUsernamePassword Remember Me Enter your password to view comments.