Figuer: -Assuming That We Do Not Use the Rule(s)that Avoid Null

question 52

Multiple Choice

Figuer:
-Assuming that we do not use the rule(s) that avoid null values in tables in converting the ERD diagram to a relational database:

• A) Cname appears as a foreign key in the table Author
• B) Cname may have null values in the table Author
• C) Both of the above
• D) None of the above

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Definitions:

Organic Product

A compound containing carbon that has been formed as the result of a chemical reaction involving organic molecules.

Reaction

A method where substances combine and transform into one or more distinct substances possessing unique chemical and physical characteristics.

Organic Product

A natural substance or compound obtained through biochemical processes from organisms or their parts.

Reaction

A process in which substances interact to form new substances with different properties, involving a reorganization of atoms or molecules.