目前的标准是由消费者和顾客驱动的，而且他们非常地分散和几乎精通价格、实用性和全球服务执行信息。
The standard is now driven by consumers and shoppers who are incredibly fragmented and have nearly perfect access to price, availability, and service performance information—globally.
然而，持久性经常需要用一种与程序执行过程中的数据保存方式不同的方法来保存状态信息。
However, persistence often requires saving state information in a way that's conceptually different from how the data exists in the execution of the program.
实际上，所有的应用程序都使用某种形式的持久性；这就是说，它们能保存信息以备将来执行。
Virtually all applications use some form of persistence; that is, they save information for future execution.
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