Question: 3. Please draw an ERD based on following description. Each department has many professors assigned to it. One of those professors chairs the department. Only

3. Please draw an ERD based on following description. Each department

3. Please draw an ERD based on following description. Each department has many professors assigned to it. One of those professors chairs the department. Only one of the professors can chair the department to (s)he is assigned, and no professor is required to accept the chair position. Therefore, DEPARTMENT (Name) is optional to PROFESSOR (ID Name, hired-year, rank) in the "chairs" relationship. A professor is assigned to a department. . . A department must have a chair

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