Which of the Following States the Rule of Entity Integrity

question 22

Multiple Choice

Which of the following states the Rule of Entity Integrity?

• A) Every row must have a value for the primary key and each value must be unique.
• B) Every foreign key must appear as another table's primary key.
• C) Every row must have a value for the primary key and values may be repeated.
• D) None of the above.

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Definitions:

Ignore Intuition

The act of disregarding one's gut feelings or initial impressions in decision-making or problem-solving processes.

Business Opportunities

Prospects or situations favorable for starting a new business or expanding an existing one, often involving the sale or lease of products, services, or equipment.

Market Analysis

The evaluation of the size, trends, and growth potential of a specific market, including identification of customer needs and competitors.

Competitive Analysis

The process of identifying key competitors and evaluating their strategies, strengths, and weaknesses to determine market position and inform business strategies.