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,title will appear as a foreign key the following number of times:
A) 2
B) 3
C) 4
D) 5

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,title will appear as a foreign key the following number of times:
A) 2 
B) 3 
C) 4 
D) 5

Quizplus · Accepted Answer

Without rules to avoid null values, a foreign key like "title" can appear multiple times in different tables, but the exact number depends on the specific ERD structure. However, based on typical ERD to relational database conversion, it often appears twice.

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