ICT GCSE: Validation and verification

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ICT GCSE REVISION: VALIDATION AND VERIFICATION

  • NEVER know that data is 100% accurate. 
  • you can put in checks to make sure its as correct as possible. This is called VALIDATION.
  • Checking that data is VALID using SOFTWARE at the INPUT storage. 
  • In other words the computer uses software to check what is enetered is reasonable. 

POTENTIAL ERRORS

  • Invalid D.O.B's
  • Incorrect names,
  • Invalid e-mail adresses 
  • Wrong credit card details. 
  • Wrong format of Data. 

TYPES OF VALIDATION

Type check: something of the correct feild type is

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