What two conditions must be met before an entity can be clascified as a weak entity? Give an example of a weak entity.

What is a strong $($or identifying$)$ relationship, and how is it depicted in a Crow's Eoot ERD?

Given the business rule $"$un employce may have many degrees, "discuss its effect an attributes, entities, and relationships. $($Hint Remember what a multivalued attribute is and how it might be implemented :