For each entity, there needs to be an indication of whether it is one-to-one, one-to-many or many-to-many relationship. Here are the answers I have but I could use more guidance with it. I struggle...

For each entity, there needs to be an indication of whether it is one-to-one, one-to-many or many-to-many relationship. Here are the answers I have but I could use more guidance with it. I struggle with this type of question.

1. BOOK and BOOK COPY (1:1)


2. COURSE and COURSE-SECTION (M:N)


3. COURSE-SECTION and ROOM (M:1)


4. INSTRUCTOR and COURSE (1:M)


5. ROOM and INSTRUCTOR (M:1)