Which statement regarding primary keys is true?
A) By definition, a primary key always consists of a single column.
B) You can identify primary keys for tables by examining sample data.
C) Some tables include more than one column that can be used as a primary key.
D) All primary keys are values generated by database software.

Question

Quizplus · Accepted Answer

Primary keys can consist of more than one column when a single column does not uniquely identify a row. This is known as a composite key.

Which Statement Regarding Primary Keys Is True