partial void DeletePrerequisiteToCourse(PrerequisiteToCourse instance);
 partial void UpdatePrerequisiteToCourse(PrerequisiteToCourse instance);
		private void detach_PrerequisiteToCourses(PrerequisiteToCourse entity)
		{
			this.SendPropertyChanging();
			entity.Prerequisite = null;
		}
 partial void InsertPrerequisiteToCourse(PrerequisiteToCourse instance);
		private void attach_PrerequisiteToCourses(PrerequisiteToCourse entity)
		{
			this.SendPropertyChanging();
			entity.Course = this;
		}