请高手帮忙解析.xsd文档，怎么遍历这个文档,谢谢！

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:element name="Database">
      <xs:complexType>
         <xs:sequence>       
            <xs:element name="GTAUserInfo">
               <xs:complexType>
                  <xs:sequence>
                     <xs:element name="GTASTRATEGINFOR">
                        <xs:complexType>
                           <xs:attribute name="StInstanceID" type="GTA_ExampleID">
                           </xs:attribute>
                           <xs:attribute name="TraderID" type="GTA_UserID">
                           </xs:attribute>
                           <xs:attribute name="StrategyName" type="GTA_RoleName">
                           </xs:attribute>
                        </xs:complexType>
                     </xs:element>
                  </xs:sequence>   
                  <xs:attribute name="User_ID" type="GTA_APPID">
                  </xs:attribute>
                  <xs:attribute name="TraderID" type="GTA_UserID">
                  </xs:attribute>
                  <xs:attribute name="User_Name" type="GTA_UserName">
                  </xs:attribute>
                  <xs:attribute name="TradePWD" type="GTA_PSW">
                  </xs:attribute>
                  <xs:attribute name="User_Dept" type="GTA_Dept">
                  </xs:attribute>
                  <xs:attribute name="User_Sex" type="GTA_Sex">
                  </xs:attribute>
                  <xs:attribute name="User_Tel" type="GTA_Tel">
                  </xs:attribute>
                  <xs:attribute name="User_EMail" type="GTA_EMail">
                  </xs:attribute>
                  <xs:attribute name="User_Status" type="GTA_UserStatus">
                  </xs:attribute>
                  <xs:attribute name="User_Possertion" type="GTA_Possertion">
                  </xs:attribute>
               </xs:complexType>
            </xs:element>
          </xs:sequence>   
</xs:schema>.xsd的文件内容基本是这样，可能文档有误，望高手都来发表一下意见，谢谢！