An alternate identifier for a database, its value may identify either a single record or a subset of all records is known as a(n):
A) attribute
B) associative field
C) primary key
D) secondary key
E) none of these

Question

Quizplus · Accepted Answer

A secondary key is used to identify a subset of records in a database, unlike a primary key which uniquely identifies a single record.

An Alternate Identifier for a Database, Its Value May Identify