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Types of validation

Types of validation. AnnMarie Minter. Types of validation. Range check Length check Look up check Presence check Format check. Range check. Checks that a value is in a given range. Length Check. Checks that a value has a certain maximum length. Look up check.

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Types of validation

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  1. Types of validation AnnMarie Minter

  2. Types of validation • Range check • Length check • Look up check • Presence check • Format check

  3. Range check Checks that a value is in a given range

  4. Length Check Checks that a value has a certain maximum length

  5. Look up check Checks that data takes one of a set of predefined values

  6. Presence check Ensures that data is entered into a field

  7. Format check 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 We combine the input mask codes, e.g.: “L????” or “0&00” or “Aaaa&&&”.

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