Problem
Make a simple database project for a college.
A college has many departments and each department has several courses. A DBMS will be very useful for a college. A system can be created where students can enroll for courses through this database system. It can also be used to keep the track of teachers, instructors, students, and the other people working in the college.
You have some latitude as to how you wish to approach this, so there is no one set way.