A Relation Can Have Only One Candidate Key

question 43

True/False

A relation can have only one candidate key.

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Definitions:

Coase Theorem

a principle that asserts that in the absence of transaction costs, parties can negotiate solutions to externalities among themselves, regardless of the initial allocation of property rights.

Externalities

Economic side effects or consequences of commercial activities that affect other parties without being reflected in the cost of the goods or services involved.

Adverse Selection

A situation in markets where buyers and sellers have different information, leading to transactions where one party may be disadvantaged.

Insurance Payouts

Refers to the money that insurance companies pay to policyholders or beneficiaries when a claim is made and approved under the terms of an insurance policy.