<?xml version="1.0" encoding="UTF-8"?>
<person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="selfRef.xsd">
 <name>Peter A. Bill</name>
 <gender>Male</gender>
 <bornOn>1967-08-13</bornOn>
 <children>
  <person>
   <name>Alice C. Bill</name>
   <gender>Female</gender>
   <bornOn>1997-06-04</bornOn>
  </person>
 </children>
</person>

selfRef.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="person">
  <xs:complexType>
   <xs:sequence>
    <xs:element name="name" type="xs:string"/>
    <xs:element name="gender" type="xs:string"/>
    <xs:element name="bornOn" type="xs:date"/>
    <xs:element name="children" minOccurs="0">
     <xs:complexType>
      <xs:sequence>
       <xs:element ref="person" maxOccurs="unbounded"/>
      </xs:sequence>
     </xs:complexType>
    </xs:element>
   </xs:sequence>
  </xs:complexType>
 </xs:element>
</xs:schema>

借楼主的幌子问一下，上面两个有什么区别呢？也就是这两个分别在何种场合下使用？

如果把上面的XML文件用NamespaceSchemaLocation改写，应该有哪些地方要变化呢？