Question 6 :
The degree of a relationship refers to the number of entity classes in the relationship.
Question 7 :
Entities use identifiers while tables use keys.
Question 8 :
Composite identifiers consist of two or more attributes.
Question 9 :
When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships.
Question 10 :
A subtype entity is a special case of another entity called a supertype entity.