Which Statement Regarding Primary Keys Is True

question 33

Multiple Choice

Which statement regarding primary keys is true?

• A) By definition, a primary key always consists of a single column.
• B) You can identify primary keys for tables by examining sample data.
• C) Some tables include more than one column that can be used as a primary key.
• D) All primary keys are values generated by database software.

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Definitions:

Unit

A single, distinct element that forms part of a system, often used for measuring, standardization, or as part of a greater whole.

Invoice

A notice from the seller to the buyer, detailing the items, their quantities, and the prices settled upon for the goods or services supplied.

Payments

Transactions by individuals or entities to transfer money in exchange for goods or services.

Overhead Expenses

The ongoing expenses associated with running a business that are not directly tied to the production of goods or services.