3.1 类图

*

Cource

-name:String-courseId:int

School

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

+addStudent():boolean+removeStudent():boolean+getStudent():String+getAllStudent():int+addDepartment():boolean+removeDepartment():loolean+getDepartment():String+getAllDepartment():int

Department

-name:int

+addInstructor():boolean+removeInstructor():boolean+getInstructor():String+getAllIstructor():int

1..*

chariPerson

0..1

teach *

attend *

Instructor

+addCourse():boolean+removeCourse():boolean

1..1

Student

-name:int-studentId:int

has

AssignedTo