Which of the Following Is Not True About Subtype Entities

question 62

Multiple Choice

Which of the following is not true about subtype entities?

• A)Subtypes may be exclusive.
• B)The supertype and subtypes will have the same identifier.
• C)Subtypes are used to avoid a situation in which some attributes are required to be null.
• D)All subtypes of a supertype must have the same attributes.

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Definitions:

Quaternary

Relating to the most recent period of the geological time scale, which follows the Tertiary period and encompasses the current time.

Hemoglobin

A molecule found in red blood cells responsible for transporting oxygen from the lungs to the tissues throughout the body and bringing carbon dioxide from those tissues back to the lungs.

Metabolism

This is the set of life-sustaining chemical reactions in organisms, involving the conversion of food to energy, the elimination of nitrogenous wastes, and the synthesis of necessary compounds.

Triglycerides

A type of fat found in the blood, originating from foods or produced by the body, used for energy storage.