In an EER model, a | (vertical line) on a relationship line next to an entity is used to indicate

In an EER model, a | (vertical line) on a relationship line next to an entity is used to indicate

In an EER model, a | (vertical line) on a relationship line next to an entity is used to indicate




a. Optional participation in the relationship
b. A composite key for the relationship
c. Foreign keys in the entity
d. Mandatory participation in the relationship
e. The "many" side of the relationship






Answer: D