When Each Nonprimary Key Attribute Is Identified by the Whole

question 44

Multiple Choice

When each nonprimary key attribute is identified by the whole key,the relation is said to be in at least:

• A)second normal form
• B)third normal form
• C)fourth normal form
• D)fifth normal form

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Definitions:

Refractory Period

The time period following an action potential during which a neuron is incapable of firing another action potential or its threshold for firing is significantly increased.

Female Orgasm

A peak of sexual pleasure in women, accompanied by a series of involuntary contractions of the pelvic muscles.

Male

A biological sex that in many species, including humans, is typically characterized by the production of small, mobile gametes called sperm.

Lubricating Fluid

A substance applied between two surfaces to reduce friction and wear, commonly used in machinery and biological joints.