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:

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Import-Export Firewalls

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Preemptive Practices

Strategic actions taken by businesses to anticipate and address potential challenges, obstacles, or market changes before they occur, often to maintain competitive advantage.

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The total monetary or market value of all the finished goods and services produced within a country's borders in a specific time period, serving as a broad measure of a nation's overall economic activity.