A Relation's Primary Key Can Include More Than One Attribute

question 23

True/False

A relation's primary key can include more than one attribute.

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Definitions:

Directional Selection

A mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.

Trend

A general direction in which something is developing or changing; often used to describe patterns or tendencies in data.

Founder Effect

A genetic phenomenon where a new population is established by a small number of individuals from a larger population, potentially leading to a significant genetic drift.

Harmful Allele

A version of a gene that can cause negative effects on the fitness or health of an organism, potentially leading to diseases or disorders.