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Create an ER diagram using ERDPLUS.com based on the following requirements. Show entities, relationships, and attributes. Please put a screenshot of your ERD. Andy's Motors
Create an ER diagram using ERDPLUS.com based on the following requirements. Show entities, relationships, and attributes. Please put a screenshot of your ERD.
Andy's Motors is a car dealership that keeps track of:
For each sales employee: salesename, startdate, number of years with dealership yearswith unique salesessn, unique salesID.
For each service employee: serviceefname, unique serviceessn, unique serviceelD.
For each customer: cname composed of cfname and clname phonenumber, unique cid.
For each vehicle: year, make, model, unique VIN
For each rpair appointment: raptdate, unique raptID.
Additional requirements:
A sales employee must have at least one assigned customer but can have many assigned customers.
Each customer is assigned to one sales employee
A vehicle is owned by exactly one customer.
Each customer owns at least one vehicle but may own many.
A vehicle may have many repair appointments but does not have to have any. Each repair appointment is associated with one vehicle.
Each service employee participates in between zero and many repair appointments. Each repair appointment has at least one service employee participating in it but can have up to four service employees participating in it
Each sales employee has exactly one service employee assigned as their tech expert. A service employee can be assigned to up to three sales employees as a tech expert, but does not have to be assigned to any.
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