What Is a Primary Key

question 41

Multiple Choice

What is a primary key?

• A) A field (or group of fields) that uniquely identifies a given record in a table.
• B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables.
• C) Characteristics or properties of an entity.
• D) A field (or group of fields) that uniquely identifies a given attribute in a table.

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Definitions:

Centralisation

Centralisation is the concentration of authority for most decisions at the top level of an organisation.

Functional Authority

The right granted to individuals or departments to make decisions and issue directives within a specific area of expertise.

Subsystems Design

The process of designing parts of a system that can function independently but contribute to the overall performance and objectives of the whole system.

Paul Lawrence

An identifiable individual but without a specific definition without context, likely refers to a person of note in a specific field.