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To prove something to be sound or logical. Also to certify conformance to an accepted standard. Contrast with verify.

For example, data entry validity checking determines whether the data make sense (numbers fall within a range, numeric data are all digits, etc.), but "validity" checking does not "verify" that the data are correct. Even if the check digit in a customer account number is determined to be a valid number, it may still be the wrong number for that individual. In practice however, the terms "validate" and "verify" are often used synonymously. See validity checking, check digit and HTML validator.

Errors Can Be Laughable
Validating data typed into the computer is not a complicated concept. However, with regard to proper names, if there is no existing database to compare to, validation is a time-consuming job. The only way to ensure correct spelling is to have two different operators type the same name twice or to have a person visually compare what has been typed by another.

Is That Really the Name?
Residents of Everittstown, New Jersey would surely get a chuckle if they were driving a car in their town with this GPS navigation system. Of course, if the error was ever reported, an updated DVD disc would solve the problem.
References in periodicals archive ?
On an ongoing basis, the software continuously monitors and validates the health of a SAN throughout changes, growth, migrations and consolidations.
The subscriber presents herself and her identification information to a registration authority, who validates that the subscriber is who she says she is.
But any roll out of the Validate card is bound to confuse retailers, who are being urged to support CitizenCard.
They intend to validate green sand by the summer of 1995.
Testing and validating policies and processes is critical because they often may conflict; and because of the SOA's loose coupling nature, it will be necessary to dynamically validate configurations or dependencies during deployment cycles.
264 to its extensive library of supported codecs to help equipment vendors ensure compliance with video telephony requirements and enable service providers to evaluate, validate and configure handsets prior to deployment.
The DrugTargetDatabase(TM) significantly enhances the ability of pharmaceutical companies to effectively identify and validate new targets.