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8 Cards in this Set
- Front
- Back
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Name the different types of validation.
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- Range check
- Character Check - Format Check - Length Check - Existence Check - Presence Check |
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What is Validation?
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Validation checks that the data input is sensible by comparing it to a set of pre-programmed rules.
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What is range check?
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An upper and lower limit are set on numerical based data.
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What is character check?
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When the characters are checked to ensure it is of the correct value/uppercase.
E.g. e-mail addresses. |
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What is format check?
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This is for data that has a set format of letters and numbers.
E.g. National Insurance Number. |
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What is length check?
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Some data should be a set length such as mobile numbers. If a user enters more or less than the set length, an error message will appear.
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What is existence check?
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Sometimes you want to refer to data that is already stored e.g. a membership number. If you type in a number that doesn't exist in the system then you will get an error.
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What is a presence check?
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When collecting data there will be some key fields that you definitely want filled in normally indicated by an '*'. If they are left blank, the user will be asked to enter a value.
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