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Why Do We Apply SQL Constraints to Tables?

The following is a list of the main reasons why SQL Constraints help us while creating and managing databases:

  • Ensure that bad data is not added to important tables.
  • Enforce business logic at the database level.
  • Maintain relationship integrity between any number of tables.
  • Boost the overall performance of the database.
  • Important database rules are documented.
  • Maintain uniqueness

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