What is a foreign key?
A) A field (or group of fields) that uniquely identifies a given entity in a table
B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship among the two tables
C) Characteristics or properties of an entity
D) A field (or group of fields) that uniquely identifies a given attribute in a table

Question

Quizplus · Accepted Answer

A foreign key is a primary key from one table that is used in another table to establish a relationship between the two tables. It ensures referential integrity by linking the data in the two tables.

What Is a Foreign Key