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Validation and Verification

Validation and Verification. By Thomas Slack. Range check. Checks that a value is in a given range e.g. if the range check is 1 to 5, the data inputted has to be between 1 and 5 numbers. Length check.

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Validation and Verification

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  1. Validation and Verification By Thomas Slack

  2. Range check Checks that a value is in a given range e.g. if the range check is 1 to 5, the data inputted has to be between 1 and 5 numbers

  3. Length check Checks that a value has a certain maximum length e.g. if the field size is 3 then the data inputted can only be a maximum of 3

  4. Lookup check Checks that the data takes one of a set of pre defined values e.g. “Comedy” or “Drama” means that the data inputted has to fit the criteria of comedy or drama

  5. Presence check Makes sure that data is inputted into a required field e.g. on Facebook username, first name and surname would all have a presence check to make sure something is entered

  6. Format check Checks that individual characters within the inputted data is valid. It uses input masks to make sure that the data is correct. It uses the input mask for putting in the format check

  7. Input mask codes These input mask codes are for format check. They are: 0 A number 0-9 must be entered # A number 0-9 is optional L A letter between a-z must be entered ? A letter between a-z is optional A A letter or a digit must be entered a A letter or a digit is optional & Any character (or symbol) can be entered > Convert everything that follows to upper case < Convert everything that follows to lower case

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