Explain the Difference Between a Primary Key and a Foreign

question 85

Essay

Explain the difference between a primary key and a foreign key.

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Definitions:

Arrhythmias

Abnormalities or irregularities in the heart rate or rhythm, potentially causing it to beat too fast, too slow, or inconsistently.

Restlessness

A state of unease or inability to remain still or silent, often indicating nervousness or mental distress.

Chronic Obstructive Pulmonary Disease (COPD)

A group of progressive lung diseases, including emphysema and chronic bronchitis, characterized by airflow obstruction and breathing-related problems.

Paroxysmal Nocturnal Dyspnea

A condition characterized by sudden, severe shortness of breath at night, often waking the person from sleep, commonly associated with heart failure.