XML(可扩展标记语言)---Schema

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<img src="http://img.blog.csdn.net/20160702181145499?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="http://img.blog.csdn.net/20160702181300910?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="http://img.blog.csdn.net/20160702181358615?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /><img src="http://img.blog.csdn.net/20160702181447172?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

<?xml version="1.0" encoding="UTF-8"?><book xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xsi:schemaLocation="http://www.cjn.cn/book demo2.xsd"      xmlns="http://www.lzp.cn/book"       isbn="0-764-580007-8" >   <title>三国演义</title>   <author>罗贯中</author>   <author>张三</author>   <price>80.5</price>   <resume>滚滚长江东逝水，浪花淘尽英雄。是非成败转头空。青山依旧在，几度夕阳红。白发渔樵江渚上，惯看秋月春风。一壶浊酒喜相逢。古今多少事，都付笑谈中。</resume>   <publish>      <publisher>文艺出版社</publisher>      <pubdate>1998-10-01</pubdate>   </publish></book>

<?xml version="1.0" encoding="UTF-8"?><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"    targetNamespace="http://www.cjn.cn/book"><span style="white-space:pre"></span><xsd:element name="book"><span style="white-space:pre"></span>  <xsd:complexType><span style="white-space:pre"></span>    <xsd:sequence><span style="white-space:pre"></span>           <xsd:element name="title" type="xsd:string"></xsd:element><span style="white-space:pre"></span>           <xsd:element name="author" type="xsd:string" minOccurs="2" maxOccurs="5"/><span style="white-space:pre"></span>           <xsd:element name="price" type="xsd:double" /><span style="white-space:pre"></span>           <xsd:element name="resume" type="xsd:string"></xsd:element><span style="white-space:pre"></span>           <xsd:element name="publish" minOccurs="0" maxOccurs="unbounded"><span style="white-space:pre"></span>             <xsd:complexType><span style="white-space:pre"></span>                <xsd:sequence><span style="white-space:pre"></span>                   <xsd:element name="publisher" type="xsd:token"/><span style="white-space:pre"></span>                    <xsd:element name="pubdate" type="xsd:date"/><span style="white-space:pre"></span>                </xsd:sequence> <span style="white-space:pre"></span>             </xsd:complexType><span style="white-space:pre"></span>           </xsd:element><span style="white-space:pre"></span>    </xsd:sequence><span style="white-space:pre"></span>    <xsd:attribute name="isbn" type="xsd:string"/><span style="white-space:pre"></span> </xsd:complexType><span style="white-space:pre"></span></xsd:element> </xsd:schema>

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