例3

Department

- name :int

+ AddInstructor :boolean+ removeInstructor :boolean+ getInstructor :String+ getAllInstructor :int

1..1

0..1

Student

- name :int- studentId :int

+ addCourse :boolean+ removeCourse :boolean

Course

- name :String- courseId :int

1..*

Instructor

- name :int

+ addCourse :boolean+ removeCourse :boolean

school

- name : String- address : String- telephone : String

+ addStudent :boolean+ removeStudent :boolean+ getStudent :String+ getAllStudents :int+ addDepartment :boolean+ removeDepartment :boolean+ getDepartment :String+ getAllDepartments :int

has