The Database Requirement That Foreign Keys Must Be Null or Have

question 72

Multiple Choice

The database requirement that foreign keys must be null or have a value corresponding to the value of a primary key in another table is formally called the

• A) entity integrity rule.
• B) referential integrity rule.
• C) rule of keys.
• D) foreign key rule.

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Definitions:

Stress Factors

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Necessary Skills

Essential abilities or competencies required to perform a specific task or job effectively.

Vicarious Learning

The process of learning through observing the actions, outcomes, and behaviors of others rather than through direct experience.

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