Which of the Following Correctly Describes the Referential Integrity Rule

question 6

Multiple Choice

Which of the following correctly describes the Referential Integrity Rule?

• A)The primary key of a table must have data values (cannot be null).
• B)Each attribute in a table must have a unique name.
• C)The data value for a foreign key could be null.
• D)Values of a specific attribute must be of the same type.

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Definitions:

Firms Lay Off

The process by which companies reduce their workforce in response to business conditions, such as decreased demand or economic downturns.

Minimum Wage

The lowest legal hourly pay that employers can pay workers, set by government law.

President Obama

Barack Obama served as the 44th President of the United States from 2009 to 2017, making history as the first African American to hold this office.

Labor Market

The marketplace in which employers find workers and workers find jobs, characterized by supply and demand for labor.