<?xml version="1.0" encoding="UTF-8"?>
<xsi:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.w3.org/"
	xmlns:tns="http://www.w3.org/" elementFormDefault="qualified">
	<xsi:element name="persons">
	
	</xsi:element>
</xsi:schema>

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
	targetNamespace="http://www.example.org/family" xmlns:tns="http://www.example.org/family"
	elementFormDefault="qualified">
	<xs:element name="person">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="firstname" type="xs:string"></xs:element>
				<xs:element name="lastname" type="xs:string"></xs:element>
			</xs:sequence>
			<xs:anyAttribute/><!-- <anyAttribute> 元素使我们有能力通过未被 schema 规定的属性来扩展XML文档！ -->
		</xs:complexType>
	</xs:element>
</xs:schema>

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
	targetNamespace="http://www.example.org/children" xmlns:tns="http://www.example.org/children"
	elementFormDefault="qualified">
	<xs:attribute name="sex"><!-- 创建属性名称为sex的属性 -->
		<xs:simpleType>
			<xs:restriction base="xs:string"><!-- 创建的约束条件 -->
				<xs:enumeration value="男"></xs:enumeration><!-- 规定属性值得范围 -->
				<xs:enumeration value="女"></xs:enumeration>
			</xs:restriction>
		</xs:simpleType>
	</xs:attribute>
</xs:schema>

<?xml version="1.0" encoding="UTF-8"?>
<persons xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://www.w3.org" xmlns:fm="http://www.example.org/family"
	xmlns:ch="http://www.example.org/children"
	xsi:schemaLocation="http://www.w3.org per.xsd http://www.example.org/family family.xsd http://www.example.org/children children.xsd">
	<fm:person ch:sex="男">
		<fm:firstname></fm:firstname>
		<fm:lastname></fm:lastname>
	</fm:person>
	<fm:person ch:sex="女">
		<fm:firstname></fm:firstname>
		<fm:lastname></fm:lastname>
	</fm:person>
</persons>