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Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Lonestar Car Dealer is a leading car dealership in US. The dealership sells both new and used cars, and it has a service facility as well. There are a couple of requirements that the database must meet. Those are as follows. Each car is sold by a salesperson. One car sale has only one salesperson. But one salesperson may sell many cars. Customers buy one or many cars. But single sale can have only one customer (No multiple customers for a given car sale). The salesperson writes one invoice for each car he/she sells. Customer is issued this invoice. A customer may be just a service center customer and does not need to be a car buyer. One service ticket per each car is issued when it is reached to the service center. The car a service history is maintained for each of the cars serviced. Car has a unique serial number. One or more mechanics can work on a car that was brought in for service. One mechanic can work on many cars. A service ticket may need parts but not all services need parts.

Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Lonestar Car Dealer is a leading car dealership in US. The dealership sells both new and used cars, and it has a service facility as well. There are a couple of requirements that the database must meet. Those are as follows. Each car is sold by a salesperson. One car sale has only one salesperson. But one salesperson may sell many cars. Customers buy one or many cars. But single sale can have only one customer (No multiple customers for a given car sale). The salesperson writes one invoice for each car he/she sells. Customer is issued this invoice. A customer may be just a service center customer and does not need to be a car buyer. One service ticket per each car is issued when it is reached to the service center. The car a service history is maintained for each of the cars serviced. Car has a unique serial number. One or more mechanics can work on a car that was brought in for service. One mechanic can work on many cars. A service ticket may need parts but not all services need parts.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Lonestar Car Dealer is a leading car dealership in US. The dealership sells both new and used cars, and it has a service facility as well. There are a couple of requirements that the database must meet. Those are as follows. Each car is sold by a salesperson. One car sale has only one salesperson. But one salesperson may sell many cars. Customers buy one or many cars. But single sale can have only one customer (No multiple customers for a given car sale). The salesperson writes one invoice for each car he/she sells. Customer is issued this invoice. A customer may be just a service center customer and does not need to be a car buyer. One service ticket per each car is issued when it is reached to the service center. The car a service history is maintained for each of the cars serviced. Car has a unique serial number. One or more mechanics can work on a car that was brought in for service. One mechanic can work on many cars. A service ticket may need parts but not all services need parts.
Transcribed Image Text:Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Lonestar Car Dealer is a leading car dealership in US. The dealership sells both new and used cars, and it has a service facility as well. There are a couple of requirements that the database must meet. Those are as follows. Each car is sold by a salesperson. One car sale has only one salesperson. But one salesperson may sell many cars. Customers buy one or many cars. But single sale can have only one customer (No multiple customers for a given car sale). The salesperson writes one invoice for each car he/she sells. Customer is issued this invoice. A customer may be just a service center customer and does not need to be a car buyer. One service ticket per each car is issued when it is reached to the service center. The car a service history is maintained for each of the cars serviced. Car has a unique serial number. One or more mechanics can work on a car that was brought in for service. One mechanic can work on many cars. A service ticket may need parts but not all services need parts.
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