You have been asked to examine a database to evaluate refere

You have been asked to examine a database to evaluate referential integrity. Which of the following should you review?

A. Field

B. Aggregation

C. Composite key

D. Foreign key

Solution

The correct answer is D. The foreign key because it refers to an attribute in one table whose value matches the primary key in another table. Answer A is incorrect because the field refers to the smallest unit of data within a database.