In a database, a column or group of columns that identifies a unique row in a table is known as a ________.
A) field
B) record
C) file
D) key

Question

Quizplus · Accepted Answer

A key is a column or group of columns that is used to uniquely identify each row in a table. It is used to enforce data integrity and ensure that each row is unique. A field refers to a single piece of data within a record, a record refers to a complete set of data for a single entity, and a file is a collection of related records. None of these options specifically identify a unique row in a table.

In a Database, a Column or Group of Columns That