What is a foreign key?
A) It is a nonkey data element that depends on another nonkey data element.
B) It is a data element that uniquely identifies a record.
C) It is the primary key of a table that is placed in another table so the tables can be joined.
D) A and B, but not C

Question

Quizplus · Accepted Answer

A foreign key is a column or set of columns in a relational database table that provides a link between data in two tables. It is the primary key of one table that is placed in another table to create a relationship between the two tables. This allows data to be pulled from multiple tables when needed, helping to eliminate data redundancy and improve data integrity.

What Is a Foreign Key