3. We want to make a database to keep track of books in a library. Using the following business rules, please show the conceptual ER diagram

a. Each book can have more than 1 author.

b. One author can write many books.

c. Each book can have only one publisher.

d. One publisher can have many books.

4. Convert the conceptual ER diagram from #3 into a logical ER diagram. Make sure you show the fields you would include, primary key, foreign keys and associative entities (if applicable).