Create a crows foot erd using a specialization hierarchy if appropriate. Granite sales company keeps information on its employees and the departments in which they work. For each department, the department name,internal mailbox server, 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
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