Question

A group of columns serving as a primary key are known as​

Answer 1

Answer:

A concatenated primary key comprises two or more columns. In a single table, you might find several columns, or groups of columns, that might serve as a primary key and are called candidate keys. A table can have more than one candidate key, but only one candidate key can become the primary key for that table.

Answer 2

Answer:

candidate key

Explanation: