Steps in validating a test

When users enter values into an HTML form, the values that they enter are strings.

In many cases, the values you need are some other data types, like integers or dates.

Many data integration or information integration applications or processes involve ETL as one of the components.The rules may be implemented through the automated facilities of a data dictionary, or by the inclusion of explicit application program validation logic.Data validation is intended to provide certain well-defined guarantees for fitness, accuracy, and consistency for any of various kinds of user input into an application or automated system.When you restrict the values that users can enter in forms, you reduce the chance that someone can enter a value that can compromise the security of your site.To see how validation works, run this page and deliberately make mistakes.Data validation rules can be defined and designed using any of various methodologies, and be deployed in any of various contexts.

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