student
+ CardID:String+ Password:String
+ select(params):bool- ApplyScholarship(params)- Applyjob()- ......()
DepartMentUser
+ AuditScholarship(params):int- AuditJob(params)- .......()
teacher
+ GH:String+ Password:String
+ Audit(params):bool- AddData(params)- ......()
User
+ UserName:String+ Password- UserType
+ Login(params): bool- EditInfo(params)- EditPassword()
SysUser
+ UserName:String+ Password:String
+ Power(params):bool- ManageUser(params)- ......()
