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Create an ER model for each of the following descriptions:a)Each company operates four departments, and each department belongs to one company.b)Each department in part (a) employs one or more employees, and each employee works for one department.c)Each of the employees in part (b)may or may not have one or more dependents, and each dependentd)belongs to one employee.e)Each employee in part (c) may or may not have an employment history.f)Represent all the ER models described in (a), (b), (c), and (d) as a single ER mod

Create an ER model for each of the following descriptions:a)Each company operates four departments, and each department belongs to one company.b)Each department in part (a) employs one or more employees, and each employee works for one department.c)Each of the employees in part (b)may or may not have one or more dependents, and each dependentd)belongs to one employee.e)Each employee in part (c) may or may not have an employment history.f)Represent all the ER models described in (a), (b), (c), and (d) as a single ER mod

Fundamentals of Information Systems
Fundamentals of Information Systems
9th Edition
ISBN:9781337097536
Author:Ralph Stair, George Reynolds
Publisher:Ralph Stair, George Reynolds
Chapter2: Hardware And Software
Section: Chapter Questions
Problem 4.1RQ
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Create an ER model for each of the following descriptions:a)Each company operates four departments, and each department belongs to one company.b)Each department in part (a) employs one or more employees, and each employee works for one department.c)Each of the employees in part (b)may or may not have one or more dependents, and each dependentd)belongs to one employee.e)Each employee in part (c) may or may not have an employment history.f)Represent all the ER models described in (a), (b), (c), and (d) as a single ER model.

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