Design an ER diagram for a library management system. The library manages books, members, and books borrowed by members.

• The library has several branches around the city. Each branch has a name and address

  and is identified by a branch ID.

• Each book in the system is identified by a unique ISBN along with its title, author(s),

  and publisher.

• A publisher is identified by its name, address, and phone. Note that publishers may be

  based anywhere around the world.

• A member has an ID in addition to having his/her name, address and phone number.

• A book may be available at any branch of the library, however the library keeps track

  of the number of copies available at each branch.

• A member may borrow several books from any branch. However, the library system

  keeps track of the date the book was loaned to that member along with the due date for returning the book and the actual return date (when the member returns the book). The due date is always set to be 2 weeks after the book is loaned.

• Note that a member may not borrow several copies of the same book even if its froma different branch.

  Construct an ER diagram for this library system showing all constraints to reflect the requirements. State assumptions as needed.