private void detach_Challenge_Quiz(Challenge_Quiz entity)
		{
			this.SendPropertyChanging();
			entity.Challenge = null;
		}
		private void attach_Challenge_Quiz(Challenge_Quiz entity)
		{
			this.SendPropertyChanging();
			entity.Challenge = this;
		}
 partial void UpdateChallenge_Quiz(Challenge_Quiz instance);
 partial void DeleteChallenge_Quiz(Challenge_Quiz instance);
 partial void InsertChallenge_Quiz(Challenge_Quiz instance);