ABC RETAILER
Observe the ER diagram for the ABC Retailer:

This ER diagram will be used for the following questions citing ABC Retailer ER Diagram.
-Which of the following is true according to the ABC Retailer ER diagram?
A)A product can be associated with many promotions and it has to be associated with at least one promotion
B)A product can be associated with many promotions but it does not have to be associated with any promotions
C)Each product is associated with exactly one promotion
D)A product is not associated with any promotions

Question

ABC RETAILER
Observe the ER diagram for the ABC Retailer:
 
This ER diagram will be used for the following questions citing ABC Retailer ER Diagram. 
-Which of the following is true according to the ABC Retailer ER diagram?
A)A product can be associated with many promotions and it has to be associated with at least one promotion 
B)A product can be associated with many promotions but it does not have to be associated with any promotions 
C)Each product is associated with exactly one promotion 
D)A product is not associated with any promotions

Quizplus · Accepted Answer

The correct answer is B because in an ER diagram, when a product can be associated with many promotions but does not have to be associated with any, it indicates an optional relationship with a cardinality of zero to many. This means a product might not be part of any promotion or could be part of one or more promotions, depending on the specific instances in the database.

ABC RETAILER Observe the ER Diagram for the ABC Retailer