Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy, if  appropriate. Granite Sales Company keeps information on employees and the departments in which they  work. For each department, the department name, internal mailbox number, and office phone extension  are kept. A department can have many assigned employees, and each employee is assigned to only one  department. Employees can be salaried, hourly, or work on contract. All employees are assigned an  employee number, which is kept along with the employee’s name and address. For hourly employees,  hourly wages and target weekly work hours are stored; for example, the company may target 40  hours/week for some employees, 32 for others, and 20 for others.

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
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy, if 
appropriate. Granite Sales Company keeps information on employees and the departments in which they 
work. For each department, the department name, internal mailbox number, and office phone extension 
are kept. A department can have many assigned employees, and each employee is assigned to only one 
department. Employees can be salaried, hourly, or work on contract. All employees are assigned an 
employee number, which is kept along with the employee’s name and address. For hourly employees, 
hourly wages and target weekly work hours are stored; for example, the company may target 40 
hours/week for some employees, 32 for others, and 20 for others. Some salaried employees are 
salespeople who can earn a commission in addition to their base salary. For all salaried employees, the 
yearly salary amount is recorded in the system. For salespeople, their commission percentage on sales 
and commission percentage on profit are stored in the system. For example, John is a salesperson with a 
base salary of R500 000 per year plus a 2 percent commission on the sales price for all sales he makes, 
plus another 5 percent of the profit on each of those sales. For contract employees, the beginning date 
and end date of their contracts are stored along with the billing rate for their hours.

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