private void detach_Activity_Relay_Tag(Activity_Relay_Tag entity)
		{
			this.SendPropertyChanging();
			entity.Activity_Cycle = null;
		}
 partial void UpdateActivity_Relay_Tag(Activity_Relay_Tag instance);
 partial void DeleteActivity_Relay_Tag(Activity_Relay_Tag instance);
 partial void InsertActivity_Relay_Tag(Activity_Relay_Tag instance);