Which of the Following Is Not True About Primary Keys

question 39

Multiple Choice

Which of the following is not true about primary keys?

• A) Primary keys cannot be null.
• B) Primary keys must be unique.
• C) Primary keys must be a single attribute.
• D) Primary keys are used to represent relationships.
• E) Primary keys can be defined using an SQL CONSTRAINT phrase.

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Definitions:

Executive Compensation

The total pay and benefits, including salary, bonuses, and stock options, received by corporate executives for their management services.

Annual Report

A comprehensive report on a company's activities throughout the preceding year, intended to give shareholders and other interested parties information about the company's financial performance.

Accounting-based Incentive Plans

Compensation plans that reward employees based on meeting certain accounting metrics, such as earnings per share or return on assets.

Long-term Business Focus

A strategic approach that prioritizes sustainable growth, investments, and operational decisions that benefit a company in the long run rather than focusing on short-term gains.