Business rules are centralized into the business logic layer that serves as an intermediary for data exchange between the presentation layer and the data access layer.

业务规则可以集中到业务逻辑层，该层充当表示层和数据访问层之间的数据交换的中间层。

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The Simple Object Access Protocol (SOAP) is actually a Web services technology, but the format of data exchange between the client and the server in the Web service is through a flexible XML schema.

简单对象访问协议(Simple Object Access Protocol, SOAP)实际上是一种Web服务技术，但Web服务中客户机和服务器之间的数据交换格式是通过灵活的XML模式实现的。

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In data security, a sad fact is that although users value their privacy, but when these data can get free access service or to obtain economic benefits, users still tend to take out the data exchange.

在数据安全领域，一个可悲的事实是虽然用户重视他们的隐私，但当通过这些数据能够换来免费访问服务或者获得经济利益时，用户还是倾向于将这些数据拿出来交换。

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For example, Equinix provides an access node for the Australian Security Exchange from the Equinix Chicago data center so firms in Chicago can connect directly to the Sydney Futures Exchange.

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