When Transforming an E-R Diagram into Normalized Relations, the Identifier

question 266

Multiple Choice

When transforming an E-R diagram into normalized relations, the identifier of the entity type becomes:

• A) the primary key of the corresponding relation.
• B) the foreign key in the corresponding relation.
• C) a nonkey attribute in the corresponding relation.
• D) a secondary key in the corresponding relation.
• E) a homonym in the corresponding relation.

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Definitions:

Growth Hormone

A protein hormone secreted by the pituitary gland that stimulates growth, cell reproduction, and regeneration in humans and other animals.

Hypothalamus

A region of the brain that regulates many bodily functions, including hunger, thirst, temperature, and the release of hormones.

Pituitary

A small gland at the base of the brain that regulates growth, metabolism, and the function of other glands in the endocrine system.

Sleep-Wake Shift

A change or disruption in the normal sleep cycle, often referring to alterations in the timing of sleep due to various factors such as work schedule changes, travel, or health conditions.