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> Verification--Evaluation performed at the end of a phase with the
>objective of ensuring that the requirements established during the
>previous phase have been met. (More generally, verification refers to the
>overall software evaluation activity, including reviewing, inspecting,
>testing, checking, and auditing.)
> Validation--The process of evaluating software at the end of the
>development process to ensure compliance with requirements.
The Encyclopedia of Software Engineering (Wiley, 1994) has approximately
these definitions, followed by a 22-page article on software "V & V." The
entire article treats V & V as a monolithic concept, never distinguishing
between the two Vs. ...RM
Richard Mateosian srm -at- c2 -dot- org srm -at- radiomail -dot- net (510)540-7745