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(solution) draw an EER diagram for the following situation, using the


draw an EER diagram for the following situation, using the traditional EER notaiton, the visio notation, or the subtypes inside supertypes notation, as specified by your instructor.


A technology compnay provides offerings to its customers. offerings arre of two types: products and services. offerings are identified by an offering ID and an attribute of description. In addition, products are described by product name, standard price, and date of first release; services are described by name of the company's uni repsonsible for the service and conditions of service. ther are repair, maintainance service and other types of services. A repair service has a cost and is the repir of some product; a maintainance service has an hourly rate. fortunately, some products never require repair. However, there are many potential repair services for a product. A cusomer may purchase an offering and the company needs to keep track of when the offering was purchassed and the contact person for that offering with the customer. unfortunately not all offerings are purchased. customers are identified by customer ID and have descriptive data of name, address, and ohone number. when a service is performed, that service is billed to some customer. because some customers purchase offerings for their clients, a customer may be billed for services he or she did not purchasse, as well as for ones that were purchased when a customer is billed for a service(although some may neverr require a service of any type), the company needs to keep track of the date of service was performed, the date the bill is due and the amount due.

 


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