Answer these question: 

 

FedEx wants to develop a company-wide information system. Shipped items are the heart of the FedEx product tracking information system. Shipped items can be characterized by item number, weight, dimensions, insurance amount, destination city, and final delivery date. Shipped items are received into the FedEx system at a single retail center. There are multiple retail centers in big cities such as LA, NY, etc. Each of the retail centers has one of the four types: FedEx office, FedEx Ship Center, Office Depot, and FedEx Authorized Ship Center. Shipped items make their way to their destination via one or more standard UPS transportation events (ex. Flights, ships, truck deliveries). These transportation events are characterized by schedule, a type (e.g. flight, truck, ship), and a delivery route. 1. Please create an Entity-Relationship diagram that captures this information about the FedEx system. Please identify primary keys, foreign keys, and cardinality constraints. Please solve many-to-many relationship problems if you have any here. If you have any assumptions, please identify those assumptions (User-defined constraints). To do this homework, you should have AT LEAST three entities: Retail Center, Shipped Items, and Transportation Event. Please think carefully. As I described above, one shipped item belongs to only one retail center. However, the shipped item can have many transportation events. (Think about the real situation. In the case of international cargo, the cargo travels across the continent using ships or airplanes, and then the cargo travels by ground transportation.)