What is a foreign key? (with SQL examples)
What is a foreign key? (with SQL examples)
Oct 20, 2020
cockroachlabs.com
Gate Smashers on Instagram: "Why We Use Foreign Key? Real Example Explained Foreign Key helps maintain referential integrity between tables. It ensures that only valid values from the base (primary key) table can be inserted into the referencing table. Also supports features like ON DELETE CASCADE for automatic cleanup during deletions."
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