Beginner
Database Management Systems
Q3 / 100
What is a foreign key?
Correct! Well done.
Incorrect.
The correct answer is B) A column referencing the primary key of another table, enforcing referential integrity
B
Correct Answer
A column referencing the primary key of another table, enforcing referential integrity
Explanation
Foreign keys enforce referential integrity: the value must exist in the referenced primary key column. They define relationships between tables (one-to-many, many-to-many via junction tables).
Progress
3/100