Draw an ER diagram for the following application from the ABC Company

Each department has a unique name, a unique number, and a particular employee who manages the department. We keep track of the start date when that employee began managing the department because the company wants to know all the managers for a department over a particular period. A department may have several locations. A department controls a number of projects, each of which has a unique name, a unique number, and a single location.

We store each employees name (first, last, MI), Social Security number (SSN), street address, salary, sex (gender), and birth date and age. An employee is assigned to one department, but may work on several projects, which are not necessarily controlled by the same department. We keep track of the current number of hours per week that an employee works on each project. We also keep track of the direct supervisor of each employee. We want to keep track of the dependents of each employee for insurance purposes. We keep each dependents first name, sex, birth date, and relationship to the employee. The company is not interested in the dependents once the employee leaves the company