Data Integrity means data validation or data checking process or Type Checking process.
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It is a mechanism in SQL Server which allows users to provide alternative or another name of the Entities (Tables) and their Attributes (columns).
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During this stage you decide the subset of tests from your test database you want to execute. Usually you do not run all the tests at once. At different stages of the quality assurance process.
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Assure that fields with a blank in the last position are processed or reported as an error an error
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