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Computer Science

What is a constraint ? Name some constraints that you can apply to enhance database integrity.

DDL & DML

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Answer

A constraint is a condition or check applicable on a field or set of fields.
Some constraints that we can apply to enhance database integrity are:

  1. Unique constraint.
  2. Primary key constraint.
  3. Default constraint.
  4. Check constraint.
  5. Foreign key constraint.

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