Data validation: Difference between revisions

Revision as of 10:15, 29 March 2007

Revision as of 20:21, 18 May 2007

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The simplest data validation verifies that the characters provided come from a valid set. For example, telephone numbers should include the [[numerical digit|digit]]s and possibly the characters <tt>+</tt>, <tt>-</tt>, <tt>(</tt> and <tt>)</tt> (plus, minus and the parentheses). A more sophisticated data validation routine would check to see the user has entered a valid country code; the number of digits entered matches the convention for the country or area specified, etc.

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Incorrect data validation can lead to [[data corruption]] or a [[software security vulnerability|security vulnerability]].