Which of the following is the unique identifier of an entity?
A) field
B) key
C) record type
D) record occurrence
E) file

Question

Quizplus · Accepted Answer

A key is a unique identifier of an entity. It serves as a reference point for linking data between tables or entities and ensures that each entity has a unique identity. Fields are attributes of entities, record type refers to the type of data within an entity, record occurrence refers to a specific instance of an entity, and a file is a collection of related data.

Which of the Following Is the Unique Identifier of an Entity