A Primary Key Whose Value Is Unique Across All Relations

question 46

Multiple Choice

A primary key whose value is unique across all relations is called a(n) :

• A) global primary key.
• B) inter-table primary key.
• C) enterprise key.
• D) foreign global key.

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Definitions:

Anticoagulant

A substance that prohibits the coagulation of blood.

Antihistamine

A type of medication that blocks histamine, a substance in the body that causes allergy symptoms like itching, swelling, and runny nose.

Duracillin

A brand name for a type of penicillin antibiotic used to treat various bacterial infections.

Coumadin

A medication brand name for warfarin, used to prevent blood clots by thinning the blood.