This is an example of Object-Oriented Modeling diagram. To answer the second question in Unit 4, please create your own answer (do not use this example). Student (Example of Instance: Michael) Attribute: RedID, year, classes, email account, blackboard account, … Behavior: Register, enroll, add and drop, study, etc Relationships: Enroll classes, study classes Class (Example of Instance: GEOG 104) Attribute: Course code, instructor, student list, Behavior: Teach students Relationships: Enrolled by students, use a classroom Classroom (Example of Instance: SH-342) Attribute: Building name, room number, the number of desks and chairs, schedules Behavior: Provide a room for classes Relationships: Allocated to classes Class Class Name Teach    1 Student Classroom RedID Class Room # Enroll, Study Provide a room