What is data validation?


Quick Answer

Data validation is a checking procedure that a computer carries out automatically to help reduce input errors in data. A common type of data validation is the spell-checker function, which is used to check for spelling and grammar errors when typing in a word processing document.

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Full Answer

Some confusion exists in the definition of data validation because the validation process does not check that the data is correct. For example, if one inputs letters into a field that states it is for numbers and in the format of _ _ / _ _ / _ _ , the computer flags this as a data-validation error. However, if one inputs 01/09/14 into the field when the date should be entered as 09/01/14, the computer sees this as still valid.

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