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Validation is the process of
checking data to make sure it is 'reasonable' data. The importance of validation in billing systems is highlighted by the event that occurred in Huddersfield in March 2003, when a person received an electricity bill... ... for £2,320,333,681,613 The bill was accompanied by a letter threatening to take him court if he did not pay in full!
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The error was a result of the meter number being entered in
the wrong field of the database... ...but simple validation rules should have found this! |
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