UPS prides itself on having up-to-date information on the processing and current location of each shipped item. To do this, UPS relies on a company-wide information system. Shipped items are the heart of the UPS product tracking information system. Shipped items can be characterized by item ymber (unique), weight, dimensions, insurance amount, destination, and final delivery date. A shipped item may be categorized as fragile item. The material of fragile items should be stored. The system needs to store the handler of the fragile item. A fragile item may be handled by multiple staff and a staff may handle multiple fragile items. items are received into the UPS system at a single retail center. I staff has a number and a name. Retail centers are characterized by their type, uniquelD, whd address. Shipped items make their way to their destination via one or more standard UPS transportation events (i.e., flights, truck deliveries). These transportation events are characterized by a unique scheduleNumber, a type (e.g, flight, truck), and a deliveryRoute. Please create an Entity Relationship diagram that captures this information about the UPS system. Be certain to indicate identifiers and cardinality constraints