-- 发布时间：9/17/2008 12:50:00 PM
-- 请教：刚接触xml schema，为什么不报错？因不应该报错？
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class.xsd:
<?xml version="1.0" encoding="GB2312"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormdefault="unqualified">
<xsd:element name="class">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="student" maxOccurs="unbounded">
<xsd:complexType>
<xsd:attribute name="studentId" type="xsd:integer"/>
<xsd:attribute name="name" type="xsd:string"/>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:unique name="StudentIdUnique">
<xsd:selector xpath=".//student"></xsd:selector>
<xsd:field xpath="@studentId"></xsd:field>
</xsd:unique>
</xsd:element>
</xsd:schema>
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class.xml
<?xml version="1.0" encoding="GB2312"?>
<class xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="class.xsd">
<student studentId="1" name="李华"/>
<student studentId="1" name="张三"/>
<student studentId="3" name="马同同"/>
</class>
因为有两个studentId="1",但是当我用浏览器打开class.xml 的时候为什么没有报错？