private void detach_Grades(Grade entity)
		{
			this.SendPropertyChanging();
			entity.Faculty = null;
		}
 partial void DeleteGrade(Grade instance);
		private void attach_Grades(Grade entity)
		{
			this.SendPropertyChanging();
			entity.Faculty = this;
		}
 partial void UpdateGrade(Grade instance);
 partial void InsertGrade(Grade instance);
		private void attach_Grades(Grade entity)
		{
			this.SendPropertyChanging();
			entity.Course = this;
		}
		private void detach_Grades(Grade entity)
		{
			this.SendPropertyChanging();
			entity.StudentInfo = null;
		}
		private void attach_Grades(Grade entity)
		{
			this.SendPropertyChanging();
			entity.StudentInfo = this;
		}