All Primary Key Entries Are Unique,and No Part of a Primary

question 93

Multiple Choice

All primary key entries are unique,and no part of a primary key may be ____.

• A) zero
• B) a foreign key
• C) null
• D) a candidate key

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Definitions:

Economy

The system of production, distribution, and consumption of goods and services within a specific geographical area.

Entrepreneurs

Individuals who organize, operate, and assume the risk for a business venture.

Preoccupied

Describes being absorbed or engrossed in thoughts or concerns, often to the extent of being unaware of one's surroundings or other matters.

Risk

The potential for loss or the uncertainty regarding the outcome of an action or decision.