A Unique Identifier That Serves as an Address for Each

question 65

Multiple Choice

A unique identifier that serves as an address for each row in a database is called:

• A) the query
• B) the primary key
• C) the composite key
• D) the form

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Definitions:

Pollutants

Substances or energies introduced into the environment that cause harm or discomfort to organisms, including humans, or damage the natural resources.

Emissions

The release of pollutants into the environment, typically referring to gases expelled by vehicles and industrial processes.

Harm

Damage or injury that affects someone or something in a negative way, often used in legal and ethical discussions.

Reduction

The act of making something smaller or less in amount, degree, or size.