(Enhanced) Entity Relationship DiagrammingLVS, Inc. – a local video store – keeps information on employees, customers, inventory (videos), and rentals.There are two types of employees at the video store, managers and clerks. The following information is needed about all employees (EmpID, Birth Date, Address (Street, City, State, and Zip), and Hire Date). Additionally Managers are paid a yearly Salary and have a Job Level. Clerks have an Hourly Rate and the store would like to know if they have a High School Degree or not. An employee must be a manager or a clerk, not both. Only clerks can rent videos.The video store would like to keep the following information about its customers: A unique CustomerID, Name (First and Last), Phone, and Email. Assume that there are no dependent accounts.The Inventory of the video store is Video Cassettes (VHS) and Digital Video Discs (DVD). Inventory information needed is: a unique ID, Title, Copy Number, Length, and Type (vhs or dvd).Each rental needs to have a unique identifier and track the customer, the employee, the Date and details about which videos are rented.Some business rules for LVS are:It is important to know which employee rented what movie to what customer.For this exercise ignore the billing aspect.Please convert any Many-to-Many relationships you may have to associate entities.Please show all keys (primary and foreign).Please use the Chen ER modeling technique learned in class.

Here is an enhanced Entity Relationship Diagram (ERD) for LVS, Inc. video store:

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Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

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(Enhanced) Entity Relationship Diagramming

LVS, Inc. – a local video store – keeps information on employees, customers, inventory (videos), and rentals.

There are two types of employees at the video store, managers and clerks. The following information is needed about all employees (EmpID, Birth Date, Address (Street, City, State, and Zip), and Hire Date). Additionally Managers are paid a yearly Salary and have a Job Level. Clerks have an Hourly Rate and the store would like to know if they have a High School Degree or not. An employee must be a manager or a clerk, not both. Only clerks can rent videos.
The video store would like to keep the following information about its customers: A unique CustomerID, Name (First and Last), Phone, and Email. Assume that there are no dependent accounts.
The Inventory of the video store is Video Cassettes (VHS) and Digital Video Discs (DVD). Inventory information needed is: a unique ID, Title, Copy Number, Length, and Type (vhs or dvd).
Each rental needs to have a unique identifier and track the customer, the employee, the Date and details about which videos are rented.
Some business rules for LVS are:

It is important to know which employee rented what movie to what customer.
For this exercise ignore the billing aspect.
Please convert any Many-to-Many relationships you may have to associate entities.
Please show all keys (primary and foreign).
Please use the Chen ER modeling technique learned in class.

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