![]() ![]() Here we will go into the basics of PostgreSQL Foreign Keys, demonstrate to you how to create, drop, and manage foreign keys on real-life examples, and introduce to you one of the most convenient Postgres GUI tools on the market. Both primary keys and foreign keys are the two types of constraints that are used to enforce data integrity in PostgreSQL tables. This is the second article in our series on PostgreSQL database constraints, and it comprises a follow-up to our recent PostgreSQL Primary Keys review.
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