VV Model

WHAT IS VV MODEL
• This Model is called a Verification and Validation Model.
• Advantages of VV - Model
• Simple and easy to use.
• Each phase has specific deliverables.
  Disadvantages of VV- Model
• Very rigid, like the waterfall model.
• Model doesn’t provide a clear path for problems found during testing phases.

WHAT IS VERIFICATION
• Disciplined approach to evaluate whether a software product fulfills the requirements or conditions imposed on them.
• Are we doing the job right?
• Also called as static testing.
• Methods For Verification
  1.Walkthrough
• Meeting led by author
• Open-ended sessions
• To establish a common understanding of the document
  2.Inspection
• Led by trained moderator (not the author)
• Remove defects efficiently, as early as possible;
• Pre-meeting preparation
  3.Technical Review
• It is often performed as a peer review without management participation
• Ideally it is led by a trained moderator, but possibly also by a technical expert.
  
  

WHAT IS VALIDATION
• Disciplined approach to evaluate whether the final, as built software
• Product fulfills its specific intended use
• Are we doing the right job?
• Also called as dynamic testing.
  Methods used are:
• Unit testing
• Integration testing
• System testing
• User Acceptance Testing
  1.Unit Testing
• Unit - smallest testable piece of software.
• Unit testing is process of testing the smallest/ individual component of program.
• Typically done by the developers and not by testers.
  2.Integration Testing
• Integration is a process of combining and testing multiple components together.
• Considered interfaces on system
  Approaches:
• Bottom Up
• Top Down
• Critical Part First/hybrid
• Big Bang approach
  3.System Testing
• System testing is the testing of a finally integrated product for compliance against user requirements.
• After development of all required modules, the development team releases a software build to be tested on the System Testing Environment.
  Usability Testing
• Also called as accessibility testing
• To check the ease of use for the user