Software Development Process Models

There are Many Software Development LifeCycle Process Models. Following are the Famous Models.

• Water Fall/Sequential Model
  
• Prototype Model
  
• Evolutionary Model
  
• Spiral Model
  
• Fish Model
  
• V-Model
  

WaterFall/Sequential Model:This model is used when the Client is very much clear with Requirements.This Waterfall/Sequential Models is sequential.After completion of one phase then only other phase is starts.The main drawback of this model is we can't go back to previous phase.


Prototype Model:This model is used when the Client is not clear with Requirements. In this Model companies will develop the prototypes and demonstrates to the clients and gathers clear requirements from the Clients.After Gathering the Clear Requirements they will continue with the Waterfall/Sequential Model.


Evolutionary Model:This model is used when the Client is keeps evolutes the requirements. Every time clients evloutes the requirements and gives the feedback with new requirements. In this model every time the Application is validated.