1..*AssignedTo
Student
- name :int- studentId :int
+addCourse () :boolean+removeCourse () :boolean
*
1..*
Course
- name :String-courseId :int
School
- name ：String- address ：String- telephone：String
+ addStudent () :boolean + removeStudent () :boolean+getStudent () :String+getAllStudents () :int+addDepartment () :boolean+removeDepartment () :boolean+getDepartment () :String+getAllStudents () :int
1..*teach
*attend
0..1
0..1chariPerson
Department
- name :int
+addInstructor ():boolean+removeInstructor ():boolean+getInstructor ():String+getAllInstructor ():int
1.1
Instructor
+ attribute1:type = defaultValue+ attribute2:type- attribute3:type
+addCourse () :boolean+removeCourse () :boolean
1..1has
