Consider the following data requirements for a postal : service company The postal service company is organized into centers. Each center is characterized by its unique ID, type, and address. The center can receive many shipped .packages Shipped package can be characterized by package number (unique), weight, dimensions, insurance amount, destination, and final delivery date. Shipped package is received at a single .center Shipped package make its way to its destination via one or more transportation (i.e., flights, or truck). The transportation can transfer many shipped packages These transportations are characterized by a unique schedule Number, a type (e.g. flight, or truck), and a delivery Route Draw an ER diagram satisfying these requirements