The second example shows how to find a customer and all associated orders for this customer, iterating through them in order to change the status attribute.
第二个例子将展示如何查找某一客户以及该客户的所有相关订单，为了更改状态属性，需要对它们进行迭代。
2
First-orderchange involves doing better what we already do, while second-orderchange alters the core ways we conduct business or even the basic business itself.
一阶变化侧重于把现在正在做的是做的更好，而二阶变化改变了我们从事的事业甚至基础生意本身的核心内容。
3
Golembiewski, Billingsley, and Yeager8 subsequently added another level of change, defining middle-orderchange as lying somewhere between the extremes of first - and second-orderchange.