ER Diagram Scenarios

  1. 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 number (unique), weight, dimensions, insurance amount, destination, and final delivery date. Shipped items are received into the UPS system at a single retail center. Retail centers are characterized by their type, uniqueID, and 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 schedule Number, a type (e.g, flight, truck), and a delivery Route. 
  2. An employee may work on any number of projects (one, many, or none at all).  While an employee is not required to be working on a project, each project must have at least one employee allocated to it (one or many).  Furthermore, every employee must belong to one and only one department.  For a department to exist however, it must have at least two employees.
  3. You have been hired by a regional hospital to create a database that will track the procedures performed for patients and the corresponding billing information. To ease the storing of this information, the hospital assigns each new patient a unique patient number.  Often, the same patient may be seen by the hospital for different procedures, and will, therefore, keep the same unique number. The hospital needs a database system that is able to track all procedures performed for a patient and can bill him or her individually for the visits.
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