本章将向读者介绍XML的基本知识以及概略地解释什么是XML以及如何使用XML。还要向读者说明如何将各种不同的XML表达式组合在一起，XML文档是如何创建的并如何向人们发送这种文档。

本章的主要内容包括：

• 　　什么是XML

• 　　为什么开发人员对XML感到激动

• 　　XML文档的“生命”

• 　　相关的技术

-This chapter will introduce readers to the basics of XML, as well as briefly explain what is XML and how to use XML. Would also like to explain to readers how the various XML expressions together, XML documents is how to create and how to send the document to the people.

The main contents of this chapter include:

•　What is XML

•　Why is the developer of XML excited

•　XML document "life"

•　relevant technical