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Definition of Validation rule

Validation rule Definition from Computer & Internet Dictionaries & Glossaries
Vb Glossary 1.0
validation rule

A rule that sets limits or conditions on what can be entered in one or more fields. Validation rules can be set for a Field or TableDef object. Validation rules are checked when you update a record containing fields requiring validation. If the rule is violated, a trappable error results.
Validation rule Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
A Validation rule is a criterion or constraint used in the process of data validation, carried out after the data has been encoded onto an input medium and involves a data vet or validation program. This is distinct from formal verification, where the operation of a program is determined to be that which was intended, and that meets the purpose.

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