consider a university library scenario for developing the E-R model. Assume in a university
•There are multiple libraries and each library has multiple student members•Students can become members to multiple libraries by paying the appropriate membership fee
•Each library has its own set of books. Within the library, these books are identified by a unique number
•Students can borrow multiple books from a subscribed library
•Students can order books using the inter-library loan. This can be useful if a student wishes to borrow books from a library where s/ he is not a member. The student orders the books through a library where s/ he is a member
