Which of the Following Is the Unique Identifier of an Entity

question 41

Multiple Choice

Which of the following is the unique identifier of an entity?

• A) field
• B) key
• C) record type
• D) record occurrence
• E) file

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Definitions:

Central Processing Unit

The primary component of a computer that performs most of the processing inside a computer, executing instructions from programs.

Operating System

The software that manages hardware resources and provides common services for computer programs, acting as an intermediary between users and the computer hardware.

Memory Management

The process of controlling and coordinating computer memory, involving the allocation and deallocation of memory blocks to programs to ensure optimal performance.

Input/Output Activities

Operations in computer programming that involve reading data from an external source or writing data to an external destination.