"Book World" is a chain of book rental stores and each store is identified by its StorelD. Location also needs to be stored for each store. There are many employees working in each store. For each employee, employee name, address, phone need to be stored together with their unique employeelD. There is a manager for each store who is identified by his$/$her ManagerID. We should also store manager's name and contact info. There are many members in each store and they are identified by their unique MemberID. There are many books in each store and each one of them has a serial number. For each book relevant information such as Title and Publication year are of interest. When a member rents a book we need identify each rental activity uniquely. We also need to store the rental date and cost.