A Table Is in 4NF If It Is in 3NF

question 5

Multiple Choice

A table is in 4NF if it is in 3NF, and _____.

• A) all attributes must be dependent on the primary key and must be dependent on each other
• B) all attributes are unrelated
• C) it has no multivalued dependencies
• D) no column contains the same values

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Definitions:

Exophthalmometry

A measurement technique used to assess the degree of forward displacement of the eyeball, often related to conditions like Graves' disease.

Tonometry

A diagnostic test that measures the pressure inside the eye, which is important for detecting and managing glaucoma.

Conjunctivitis

An eye condition characterized by inflammation of the outermost layer of the eye and the inner surface of the eyelids, commonly known as pink eye.

Ophthalmoscopy

A procedure for examining the interior structures of the eye, especially the retina, using an instrument called an ophthalmoscope.