In a Relational Database Design,all Relationships Are Expressed by ________

question 29

Multiple Choice

In a relational database design,all relationships are expressed by ________.

• A)creating a primary key
• B)creating a foreign key
• C)creating a supertype
• D)creating a subtype

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Definitions:

Controller

A device or set of devices that manages, commands, directs, or regulates the behavior of other devices or systems.

Main Power Lines

The primary electrical transmission and distribution lines carrying high voltage electricity from power plants to substations before distribution to consumers.

Fault Relay Contact

An electrical switch that opens or closes in response to a fault condition, used for safety or control in electrical circuits.

Processor Malfunction

An error condition in which the CPU of a computer or industrial control system fails to operate correctly.