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

Question

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

Quizplus · Accepted Answer

Based on the given assumption, Cname in the Author table may contain null values since there is no rule set to avoid null values. Additionally, it appears as a foreign key in the Author table that refers to the Cname primary key in the Conference table. Therefore, both options A and B are correct.

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