Concatenated Keys Are

question 76

Multiple Choice

Concatenated keys are

• A)used when combining two or more REA diagrams.
• B)foreign keys used to implement 1:N or 1:1 relationships.
• C)multiple attribute keys used to implement 1:M relationships.
• D)used to implement M:N relationships.

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Definitions:

Serotonin

A neurotransmitter in the brain that plays key roles in stabilizing mood, feelings of well-being, and happiness.

Norepinephrine

A neurotransmitter and hormone involved in the body's stress response and in various cognitive and emotional functions.

Suprachiasmatic Nucleus

A small region of the brain in the hypothalamus responsible for controlling circadian rhythms, which regulate the body's sleep-wake cycle.

Melatonin

A hormone produced by the pineal gland in the brain, responsible for regulating sleep and wakefulness.