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What is Verification and Validation ?

Answer Posted / rajkumar

Verification- Provision through objective evidence that
output of a phase in s/w development life cycle meets the
req specified at the start of that phase. Verification looks
for correctness, completeness, consistency. Verification is
a defect prevention activity. Verification mainly applies to
the process used to develop projects. It is also called as
Quality Assurance activity. e.g. different types of reviews.

Validation- Provision through objective that output of a
given phase in S/W development life cycle satisfies the
customer req specified at the start of the phase. Validation
refers to the actual conventional testing we do. Validation
applies to the product. Validation is a defect detection &
correction activity. Black Box testing.

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