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Types of validation. By Paris Alderman . Range check. Checks that a value is in a given range. . Length check . Checks that a value has a certain maximum length. . Lookup check . Checks that data takes one of a set of predefined values . Presence check . - PowerPoint PPT Presentation
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Types of validationBy Paris Alderman
Range check
Checks that a value is in a given range.
Length check
Checks that a value has a certain maximum length.
Lookup check
Checks that data takes one of a set of predefined values
Presence check
Ensures that data is entered in to a field.
Format check
Checks that individual characters within the data are valid.