Why Do Relational Databases Use Primary Keys and Foreign Keys

question 127

Multiple Choice

Why do relational databases use primary keys and foreign keys?

• A) To create an entity.
• B) To create physical relationships.
• C) To create logical relationships.
• D) To create an attribute.

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Definitions:

Performance Criteria

The standards or benchmarks used to assess the quality or success of a task, project, or performance.

Human Capital

The collective skills, knowledge, and expertise that employees contribute to an organization's value.

Productivity

A measure of the efficiency of a person, machine, factory, system, etc., in converting inputs into useful outputs.

Extrinsic Benefits

Advantages or rewards received from an activity that are external to the activity itself, such as money, grades, or recognition.