A foreign key is essential in relational databases to represent the relationship between two tables.

Name: A foreign key is essential in relational databases to represent the relationship between two tables.
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A foreign key is used to establish a relationship between two tables by referencing the primary key of one table in the other table. Without a foreign key, it would not be possible to maintain referential integrity between the tables, which is an essential aspect of a relational database.

A Foreign Key Is Essential in Relational Databases to Represent