A foreign key is a column that matches a primary key in another table so we can join the data in each together.
This is partially true. Foreign keys can also reference unique (alternate) keys. 👌
Also foreign key is not required to join data. It just enforces integrity. But you know that 😊
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A foreign key is a column that matches a primary key in another table so we can join the data in each together.
This is partially true. Foreign keys can also reference unique (alternate) keys. 👌
Also foreign key is not required to join data. It just enforces integrity. But you know that 😊