The UNIQUE Key Constraint and the ____ Constraint Are Very

question 79

Multiple Choice

The UNIQUE key constraint and the ____ constraint are very similar.

• A) NOT NULL
• B) CHECK
• C) PRIMARY KEY
• D) FOREIGN KEY

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Definitions:

Sun

The star at the center of our solar system, which is a source of light and heat for the planets orbiting around it.

Potential Energy

Potential energy is the energy held by an object because of its position relative to other objects, stress within itself, electric charge, or other factors.

Chemical Reaction

A process in which substances interact, leading to the formation of new substances with different properties.

Molecular Bonds

Molecular bonds are attractive forces that hold atoms together in molecules, including ionic, covalent, and hydrogen bonds among others.