Why Do Relational Databases Use Primary Keys and Foreign Keys

question 14

Multiple Choice

Why do relational databases use primary keys and foreign keys?

• A) To create a database.
• B) To create physical relationships.
• C) To create logical relationships.
• D) All of these.

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Definitions:

Long-term Memory

The phase of memory responsible for the storage of information over extended periods, potentially as long as a lifetime.

Disequilibrium Principle

The state of imbalance or disequilibrium in an eco-system or in a market, which can lead to significant shifts or adjustments within that system.

Classical Conditioning

A learning process that involves creating associations between a naturally occurring stimulus and a previously neutral stimulus.

Law of Effect

A psychological principle suggesting that behaviors followed by positive outcomes are likely to be repeated, while those with negative outcomes are not.