Customers can have multiple locations. Attributes of location are: CustomerID, LocationID (which is unique only for each CustomerID), Address (Street, City, State, Zip code), Telephone, BuildingSize Service A security service is performed for a customer at one or mor locations. Before services are performed, an estimate is prepared. Attributes of service are: ServiceID (identifier), Description, Cost, Coverage, ClearanceRequired Additional Business Rules In addition to the classes outlined above, the following information will need to be stored and should be shown in th model. These may be classes but they also reflect a relationship between more than one class. Estimates: Date, Amount, Business consultant, Services, Customer