Database Validation Part 1

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  • Database Validation
    • Validation
      • Way of trying to reduce the number of errors in the data being entered into the system
      • Performed by the computer
      • Validation aims to make sure that data is sensible, reasonable, complete and within acceptable boundaries
      • Validation can help reduce the number of errors but it can not stop them
    • Range Check
      • Range check allows you to set up suitable boundaies
      • Upper Limit
        • The maximum price of an item in a shop is £100
          • =0
      • A Range
        • To achieve a B Grade you must score between 75% and 84%
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