ER Design Exercise
We need to create a database ER design based on the following (simplified) requirements of the COMPANY Database:
• The company is organized into DEPARTMENTs. Each department has a name, number, and an employee who manages the department. A department may have several locations.
Each department controls a number of PROJECTs. Each project has a unique name, unique number, budget, and a brief description.
- We store each EMPLOYEE’s employee number, name, address, phone number, and salary
- Each employee works for one department but may work on several projects, which are not necessarily controlled by the same department.
- We keep track of the start date of each employee working for their respective department.
- We keep track of the number of hours per week that an employee currently works on each project.
- We also keep track of the direct supervisor of each employee.
- Each employee may have a number of DEPENDENTs.
- Each employee may have a number of DEPENDENTs. • For each dependent, we keep track of their name, age, birthdate, and relationship to the employee. We assume each dependent only has one parent who works for the company
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