This column is about the social networking aspect to all this.

这个专栏涉及社交网络的各个方面。

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Since UDDI by itself would take an entire series of articles (keep an eye on this column for just that, though), we will focus only on the WSDL aspect.

因为UDDI本身就要占用整整一个系列的文章来描述(那就请关注本专栏，等待这方面的内容吧)，所以我们将只集中描述WSDL方面的内容。

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In effect, such a null value is a type of data column overloading, and in this context, a null value might be understood to represent some aspect of the data.

实际上，这类null值是一种数据列重载，并且在这个上下文中，null值可能被理解为表示数据的某些方面。

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