What Is an Instance

question 53

Multiple Choice

What is an instance?

• A)It is a key that uniquely identifies a person,place,or thing.
• B)It is a group of related information about an entity.
• C)It is a record or row in a relation.
• D)It is an occurrence of an entity class that can be identified by a primary key.

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Definitions:

Drag During Flight

The aerodynamic force opposing an object’s motion through air, affecting the energy efficiency and speed of flying objects such as aircraft and birds.

Parasite-Host Relationships

Interactions between organisms where the parasite lives on or in the host, often causing harm to the host.

Common Genotypes

Genetic compositions that are frequently observed within a population, indicating a high frequency of certain alleles.

Evolutionary Cycles

Periods of evolutionary change characterized by sequences of rapid diversification followed by longer periods of stability or gradual change in species.