An Attribute in a Relation of a Database That Serves

question 21

Multiple Choice

An attribute in a relation of a database that serves as the primary key of another relation in the same database is called a:

• A) link attribute.
• B) link key.
• C) foreign key.
• D) foreign attribute.

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Definitions:

Genes

Units of hereditary information made of DNA, residing on chromosomes, and containing instructions for the development, functioning, and reproduction of organisms.

Nonviral Organisms

Organisms that do not belong to the virus category and are capable of independent reproduction and metabolism.

Replicate

To duplicate or reproduce an experiment, study, or procedure to verify its results.

Extant Cetaceans

Currently living species of the marine mammal group that includes whales, dolphins, and porpoises.