private void attach_Diems(Diem entity)
 {
     this.SendPropertyChanging();
     entity.MonHoc = this;
 }
 private void detach_Diems(Diem entity)
 {
     this.SendPropertyChanging();
     entity.MonHoc = null;
 }
 private void detach_Diems(Diem entity)
 {
     this.SendPropertyChanging();
     entity.SinhVien = null;
 }
 private void attach_Diems(Diem entity)
 {
     this.SendPropertyChanging();
     entity.SinhVien = this;
 }
 partial void DeleteDiem(Diem instance);
 partial void UpdateDiem(Diem instance);
 partial void InsertDiem(Diem instance);