A Relation Is in Domain/key Normal Form If ________

question 73

Multiple Choice

A relation is in domain/key normal form if ________.

• A)every key of the relation is a logical consequence of the definition of constraints and determinants
• B)every key of the relation is a logical consequence of the definition of constraints and domains
• C)every constraint on the relation is a logical consequence of the definition of keys and determinants
• D)every constraint on the relation is a logical consequence of the definition of keys and domains

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Definitions:

Fossilized Remains

Preserved evidence of ancient life in the form of mineralized bones, footprints, or impressions in rock.

Extinction

Extinction is the process by which a species, genus, or family of organisms ceases to exist, often due to environmental changes, loss of habitat, or competition from other species.

Paleontology

The scientific study of the history of life on Earth through the examination of plant and animal fossils.

Common Ancestor

The latest ancestor from whom all members of a group have descended directly.