Login or Create an Account to view the mark scheme, comment, and add to a test
Which of the following correctly describes a foreign key?
An attribute that forms part of a composite primary key to uniquely identify a record in a table.
An attribute that uniquely identifies a record in a relational database table.
An attribute that is copied to an index data structure in order to optimise query efficiency for those rows / records associated with the copied attribute.
An attribute that corresponds to the value of a primary key in another table for the purpose of creating a link between the two tables.

Multiple Choice1 MarkCommunity
6 Uses7 Views2 Likes