What Is a Foreign Key

question 5

Multiple Choice

What is a foreign key?

• A) A field (or group of fields) that uniquely identifies a given entity in a table
• B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship among the two tables
• C) Characteristics or properties of an entity class
• D) A field (or group of fields) that uniquely identifies a given attribute in a table

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Definitions:

Nominal Voltage

Nominal voltage refers to the standard or designated voltage level at which an electrical device or system is designed to operate under normal conditions.

Rated Horsepower

The official power output of an engine or motor as certified by the manufacturer, indicating its performance capability.

Heat Generated

The amount of thermal energy produced as a result of electrical resistance, mechanical friction, or chemical reactions.