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

Question

Quizplus · Accepted Answer

A key is a column or group of columns that uniquely identifies each row in a table. It is used to enforce uniqueness and to allow for efficient searching and sorting of data. In relational databases, a primary key is a unique identifier for a record in a table, while a foreign key is a column that refers to a primary key in another table.

A ________ Is a Column or Group of Columns That