Lesson 1 of 8

Impose integrity with constraints

Choose between type, NOT NULL, UNIQUE, CHECK, PRIMARY KEY and FOREIGN KEY.

34 minPostgreSQL Pro

By the end of this lesson

  • Associate a rule with a constraint
  • Understanding Referential Integrity
  • Test for expected failures

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Impose integrity with constraints is part of the complete programme: 38 lessons, 62 verifiable exercises and 8 published guided projects.

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