What is one or a group of data elements that uniquely identifies a record?
A) A primary key
B) An index key
C) A foreign key
D) A locator key

Question

Quizplus · Accepted Answer

A primary key is a unique identifier for a record in a database table. It cannot be null and must be unique for each record. This ensures that each record can be uniquely identified and accessed for data retrieval or modification. An index key is used to speed up the querying process but does not necessarily uniquely identify a record. A foreign key is used to link tables together but also does not uniquely identify a record. A locator key is not a commonly used term in database management.

What Is One or a Group of Data Elements That