A(n)subquery Is a Subquery That Executes Once for Each Row

question 37

Short Answer

A(n)subquery is a subquery that executes once for each row in the outer query.

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Definitions:

Founder Effect

A genetic phenomenon that occurs when a new population is established by a very small number of individuals, leading to a reduction in genetic variation.

Genetic Flow

The transfer of genetic material between populations of the same species or between different species, leading to changes in genetic makeup.

Genetic Drift

A mechanism of evolution involving random fluctuations in the frequency of alleles within a population, which can cause genetic variation to decrease over time.

Bottleneck

A sudden decrease in a population size caused by adverse environmental factors; may result in genetic drift; also called genetic bottleneck or population bottleneck.