What Relationship Exists When a Primary Key May Appear Many

question 6

Multiple Choice

What relationship exists when a primary key may appear many times as a foreign key,and a foreign key must appear once and only once as a primary key?

• A)1:1
• B)1:M
• C)M:M
• D)M:1

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Definitions:

Industry Output

The total production of goods and services by all firms operating within a certain industry over a specific period.

Discount Sources

Various means or strategies by which buyers can obtain goods or services at reduced prices, such as coupons, clearance sales, or promotional codes.

Cost Function

A mathematical formula that calculates the total cost incurred by a company to produce a specific quantity of a product or service.

Used-Car Dealer

A business or individual that specializes in selling pre-owned vehicles to consumers.