Match the following keys

256.

Candidate key: A key that is composed of more than one column
Alternate key: Any candidate key that has not been selected as the primary key
Composite key: A column, or set of columns that can uniquely identify a row in a table

Candidate key: A column, or set of columns that can uniquely identify a row in a table
Alternate key: A key that is composed of more than one column
Composite key: Any candidate key that has not been selected as the primary key

Candidate key: A column, or set of columns that can uniquely identify a row in a table
Alternate key: Any candidate key that has not been selected as the primary key
Composite key: A key that is composed of more than one column

None of the above

View Description

A candidate key is one that can identify each row of a table uniquely. Generally a candidate key becomes the primary key of the table. If the table has more than one candidate key, one of them will become the primary key, and the rest are called alternate keys. A key formed by combining at least two or more columns is called composite key.