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Microsoft® SQL Server 2012 Unleashed by Alex T. Silverstein, Chris Gallelli, Paul T. Bertucci, Ray Rankins

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Implementing Declarative Data Integrity

Declarative integrity is enforced within the database, using constraints, rules, and defaults. This is the preferred method of enforcing integrity because it has low overhead and requires little or no custom programming. It can be centrally managed in the database, and it provides a consistent approach for ensuring the integrity of data.

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