Multiple choice technology web technology A foreign key is : Specified in the definition of a referential constraint. A part of the definition of a table. A unique key None of the above Reveal answer Fill a bubble to check yourself A Correct answer Explanation A foreign key is a key specified in the definition of a referential constraint to link two tables. It is not necessarily a unique key on its own, and it is part of the constraint definition rather than a basic table column definition.