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V Model

Emphasis on Verification & Validation

Verification - Are we building the product right? (ensuring that it meets specifications) Validation - Are we building the right product? (Confirming it meets user’s needs)

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Advantages

  • Emphasis of Verification and Validation
  • Constant testing
  • Easy to use
  • Good for critical/embedded systems
  • Can be used for small projects
  • Highly disciplined

Disadvantages

  • Does not support overlapping of phases
  • Linear
  • Time consuming
  • Unknown project completion
  • Not good for big and complex projects
  • Changes cannot be accommodated easily
  • No iteration of phases
  • May require lot of documentation