Validating material

Posted by / 27-Feb-2018 11:55

Validating material

A text field such as a personal name might disallow characters such a markup-based security attack.An e-mail address might require at least one @ sign and various other structural details.

The method is to check that data falls the appropriate parameters defined by the systems analyst.

For example, a US phone number should have 10 digits and no letters or special characters.

Code and cross-reference validation includes tests for data type validation, combined with one or more operations to verify that the user-supplied data is consistent with one or more external rules, requirements, or validity constraints relevant to a particular organization, context or set of underlying assumptions.

Regular expressions are effective ways of implementing such checks.

(See also data type checks below)Checks for missing records.

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