partial void Deleteteam(team instance);
 partial void Updateteam(team instance);
		private void detach_teams(team entity)
		{
			this.SendPropertyChanging();
			entity.league = null;
		}
 partial void Insertteam(team instance);
		private void attach_teams(team entity)
		{
			this.SendPropertyChanging();
			entity.league = this;
		}