When Selecting a Foreign Key Placement for a 1:1 Relationship

question 80

Multiple Choice

When selecting a foreign key placement for a 1:1 relationship, place the PK of the entity on the mandatory side in the entity on the optional side as a FK, and make the FK mandatory when .

• A) one side is mandatory and the other side is optional
• B) one side participates in another relationship
• C) both sides are optional
• D) both sides are mandatory

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Definitions:

Unemployment Rate

The ratio of individuals in the labor force who are without a job and are searching for employment.

Expected Inflation

The rate at which the general level of prices for goods and services is projected to rise over a specific period, reflecting the public's expectations for future inflation.

Actual Inflation

The observed increase in prices for goods and services in an economy over a period, typically measured as a percentage.

Unemployment Rate

The unemployment rate is the percentage of the labor force that is jobless and actively looking for employment.