Why is validating data important

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Another form of enforcement action involves automatically changing the data and saving a conformant version instead of the original version. For example, converting an [all-caps] entry to a [Pascal case] entry does not need user input.

For example: Data type validation is customarily carried out on one or more simple data fields.

The simplest kind of data type validation verifies that the individual characters provided through user input are consistent with the expected characters of one or more known primitive data types; as defined in a programming language or data storage and retrieval mechanism as well as the specification of the following primitive data types: 1) integer; 2) float (decimal); or 3) string.

The rules may be implemented through the automated facilities of a data dictionary, 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.

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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