Which of the Following Correctly Describes the Referential Integrity Rule

question 6

Multiple Choice

Which of the following correctly describes the Referential Integrity Rule?

• A)The primary key of a table must have data values (cannot be null).
• B)Each attribute in a table must have a unique name.
• C)The data value for a foreign key could be null.
• D)Values of a specific attribute must be of the same type.

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Definitions:

Anthocyanins

Water-soluble pigments that may appear red, purple, or blue depending on the pH, found in the tissues of higher plants.

Coumarins

Naturally occurring chemical compounds with potential therapeutic effects, often found in plants.

Professional Research

Systematic inquiry or study conducted by professionals to establish facts or principles or to collect information on a subject, to further professional knowledge.

Nightingale

Refers to Florence Nightingale, a foundational figure in modern nursing known for her pioneering work in hygiene, patient care, and the use of statistics in healthcare.