private void detach_Orders_Coupons(Orders_Coupon entity)
		{
			this.SendPropertyChanging();
			entity.Coupon = null;
		}
		private void attach_Orders_Coupons(Orders_Coupon entity)
		{
			this.SendPropertyChanging();
			entity.Coupon = this;
		}
 partial void UpdateOrders_Coupon(Orders_Coupon instance);
 partial void DeleteOrders_Coupon(Orders_Coupon instance);
 partial void InsertOrders_Coupon(Orders_Coupon instance);