university wants to set up a database to record details about its staff, the departments they belong to and the training they attended. The purpose of developing the database is keep the staff information such as staff identity number, staff name, staff address, staff telephone number, staff job title and staff salary. As for the staff telephone number, the database allows keeping more than one of the staff telephone numbers. For the department information, the database keeps the name of the department and its location. It is required that every staff belongs to at least one department. Also, it is required that each department has exactly one staff to lead the department. To improve staff self-development, the university encourages every staff to attend courses. Hence, the database keeps the course information such as the course name, course duration, and course cost. Each staff is required to attend at least one course. For one course, the university can approve a number of staff to attend it. Only attended courses are kept in the database. For every course attended by a staff,
A university wants to set up a
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