What Database Concept States That the Primary Key Cannot Allow

question 37

Multiple Choice

What database concept states that the primary key cannot allow null values?

• A)legal-values integrity
• B)structural integrity
• C)referential integrity
• D)entity integrity

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Definitions:

Stroke Volume

The amount of blood ejected from the left ventricle of the heart during each contraction.

Preload

Volume of blood in the ventricles at the end of diastole, immediately before ventricular contraction.

Intravenous (IV) Fluids

Liquids given through a vein to provide essential nutrients or medications directly into the bloodstream.

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.