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SQL SERVER 2017 TUTORIAL 8 : Constraints
Published : 25-05-2018 - Duration : 07:34 - View : 39
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SQL constraints are used to specify rules for the data in a table.Constraints let you define the way the Database Engine automatically enforces the integrity of a database. Constraints define rules regarding the values allowed in columns and are the standard mechanism for enforcing integrity. Using constraints is preferred to using DML Triggers, ru...
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