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

question 30

Multiple Choice

If a 1:M relationship is optional on the 1 side and mandatory 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:

Developed Countries

Nations with high levels of economic development, typically characterized by significant industrialization, a high standard of living, and advanced technological infrastructure.

Food-Insecure Families

Households that lack consistent access to enough food for every member to lead a healthy life, often due to economic hardship or instability.

Obesity

A medical condition characterized by excessive body fat that may impair health, often resulting from an imbalance between calorie intake and energy expenditure.

Fast Food

Quick-service food items that are prepared and served rapidly, often in a standardized manner through chain restaurants.