An Artificial Column Added to a Relation to Serve as the Primary

question 28

Multiple Choice

An artificial column added to a relation to serve as the primary key is a ________.

• A)composite key
• B)candidate key
• C)foreign key
• D)surrogate key
• E)dependency

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Definitions:

Professional Counseling

A service provided by trained professionals to help individuals deal with personal, social, or psychological challenges and difficulties.

Physical Dependence

A physiological state of adaptation to a substance, where the absence of the substance will provoke withdrawal symptoms.

Substance Abuse

The harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs.

Encopresis

A disorder characterized by involuntary defecation in inappropriate places, often due to chronic constipation.