If a 1:M Relationship Is Mandatory on the 1 Side

question 29

Multiple Choice

If a 1:M relationship is mandatory on the 1 side and optional on the M side,which of the following is true?

• A)The resulting foreign key can have null (empty)values
• B)The resulting foreign key cannot have null (empty)values
• C)The resulting foreign key must have null (empty)values
• D)No foreign key is created as a result of mapping such a relationship

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Definitions:

Rational-Ignorance Effect

A phenomenon where individuals decide not to acquire information because the cost of doing so outweighs the expected benefits.

Voters

Individuals who are eligible to vote in elections, making decisions about who will hold public office and on various issues.

Political Choices

Decisions made by individuals, groups, or governments that relate to the governance of a country, state, or local area.

Public Choice Analysis

A branch of economics that studies the decision-making behaviors of voters, politicians, and government officials from the perspective of economic theory.