ICT - Data Validation

  • Created by: lou9119
  • Created on: 08-04-16 14:18
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  • Data Validation
    • Errors
      • -Corrected and recorded wrong.
      • -Entered into a computer incorrectly.
      • -Processed incorrectly.
      • -Deliberately or accidentally changed by unauthorised people (HACKING)
      • -Become corrupted when being transmitted from one computer to another
    • Checks-
      • -Range Check: Numerical data checked to see if the value has an acceptable range so that it is sensible.
      • -Presence Check: Sometimes it is essential to have an item of data present.
      • -Format Check: Will look at the data to see if it conforms to the rules for that data item.
      • -Check Digit: Will look if digits are in the wrong order.


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