A Candidate Key That Has Been Selected as the Unique

question 102

Multiple Choice

A candidate key that has been selected as the unique, identifying characteristic for an entity type is called a(n) :

• A) attribute.
• B) identifier.
• C) secondary key.
• D) gerund.
• E) index.

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Definitions:

Secondary Structure

The local folded structures that form within a polypeptide due to interactions between atoms in the backbone.

Globular Protein

Proteins that are roughly spherical in shape, often soluble in water and serving roles in catalysis, regulation, and transport.

Aspartic Acid

A non-essential amino acid involved in the synthesis of proteins and in the urea cycle of mammals.

Aqueous Surroundings

Refers to an environment or condition where water is the solvent surrounding a substance or structure.