Primary Keys | MCQs

Explanation

An Alternate key is any candidate key not chosen as the primary key.

It can still uniquely identify records, but isn't used as the main identifier.

Explanation

A primary key is a field or set of fields with values that are unique throughout a table.

Values of the key can be used to refer to entire records, because each record has a different value for the key.

Each table can only have one primary key.