达索的 SmarTeam 这样设计是什么意思?

        我一直在研究达索公司旗下的 SmarTeam 软件，它是一个很好的PDM（产品数据管理）软件，它的最新版本是V5R17。在它的安装目录中有一个目录“ConfigurationSettings”，它包括2个子目录：分别是 Data 和 Schemas。
        在DATA目录中有2个文件，分别是 namespaces.xml 和 namespaces.xsd ，它们的内容如下： 

 namespaces.xml

<configNamespaces xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.smarteam.com/dev/ns/config/namespaces/1.0 http://www.smarteam.com/dev/schema/config/namespaces/1.0/namespaces.xsd" xmlns="http://www.smarteam.com/dev/ns/config/namespaces/1.0">
    <configNamespace namespace="smarteam.std.webControls.config" filename="smarteam.std.webControls.config.xml" schemaFilename="webControls.xsd" />
    <configNamespace namespace="smarteam.std.help.config" filename="smarteam.std.help.config.xml" schemaFilename="help.xsd" />
    <configNamespace namespace="smarteam.std.nls.config" filename="smarteam.std.nls.config.xml" schemaFilename="nls.xsd" />
    <configNamespace namespace="smarteam.std.progressIndicator.config" filename="smarteam.std.progressIndicator.config.xml" schemaFilename="progressIndicator.xsd" />
    <configNamespace namespace="smarteam.std.redirect.config" filename="smarteam.std.redirect.config.xml" schemaFilename="redirect.xsd" />
    <configNamespace namespace="smarteam.std.viewers.config" filename="smarteam.std.viewers.config.xml" schemaFilename="viewers.xsd" />
    <configNamespace namespace="smarteam.std.preferences.config" filename="smarteam.std.preferences.config.xml" schemaFilename="preferences.xsd" />
    <configNamespace namespace="smarteam.std.integration.config" filename="smarteam.std.integration.config.xml" schemaFilename="integration.xsd" />
    <configNamespace namespace="smarteam.std.webEditor.config" filename="smarteam.std.webEditor.config.xml" schemaFilename="webEditor.xsd" />
    <configNamespace namespace="smarteam.std.configClient.config" filename="smarteam.std.configClient.config.xml" schemaFilename="configClient.xsd" />
    <configNamespace namespace="smarteam.std.favoriteSearches.config" filename="smarteam.std.favoriteSearches.config.xml" schemaFilename="favoriteSearches.xsd" />
    <configNamespace namespace="smarteam.std.foundation.config" filename="smarteam.std.foundation.config.xml" schemaFilename="foundation.xsd" />
    <configNamespace namespace="smarteam.std.nlsTranslationTool.config" filename="smarteam.std.nlsTranslationTool.config.xml" schemaFilename="nlsTranslationTool.xsd" />
    <configNamespace namespace="smarteam.std.legacyPreferences.config" filename="smarteam.std.legacyPreferences.config.xml" schemaFilename="legacyPreferences.xsd" />
    <configNamespace namespace="smarteam.std.lifeCycle.config" filename="smarteam.std.lifeCycle.config.xml" schemaFilename="lifeCycle.xsd" />
    <configNamespace namespace="smarteam.std.authentication.config" filename="smarteam.std.authentication.config.xml" schemaFilename="authentication.xsd" />
    <configNamespace namespace="smarteam.std.externalApplication.config" filename="smarteam.std.externalApplications.config.xml" schemaFilename="externalApplications.xsd" />
    <configNamespace namespace="smarteam.std.embeddedScripts.config" filename="smarteam.std.embeddedScripts.config.xml" schemaFilename="embeddedScripts.xsd" />
    <configNamespace namespace="smarteam.std.fileStorageManager.config" filename="smarteam.std.filestoragemanager.config.xml" schemaFilename="fileStorageManager.xsd" />
    <configNamespace namespace="smarteam.std.clientLibraries.UI.config" filename="smarteam.std.clientLibraries.UI.config.xml" schemaFilename="clientLibrariesUI.xsd" />
    <configNamespace namespace="smarteam.std.programManagement.config" filename="smarteam.std.programManagement.config.xml" schemaFilename="programManagement.xsd" />
    <configNamespace namespace="smarteam.std.configurationManagement.config" filename="smarteam.std.configurationManagement.config.xml" schemaFilename="configurationManagement.xsd" />
    <configNamespace namespace="smarteam.std.persistencyStorage.config" filename="smarteam.std.persistencyStorage.config.xml" schemaFilename="persistencyStorage.xsd" />
    <configNamespace namespace="smarteam.std.workFlow.config" filename="smarteam.std.workFlow.config.xml" schemaFilename="workFlow.xsd" />
    <configNamespace namespace="smarteam.std.dynamicTypeMappings.config" filename="smarteam.std.dynamicTypeMappings.config.xml" schemaFilename="dynamicTypeMappings.xsd" />
    <configNamespace namespace="smarteam.std.messages.config" filename="smarteam.std.messages.config.xml" schemaFilename="messages.xsd" />
    <configNamespace namespace="smarteam.std.clientLibraries.applications.config" filename="smarteam.std.clientLibraries.applications.config.xml" schemaFilename="clientLibrariesApplications.xsd" />
    <configNamespace namespace="smarteam.std.sequence.config" filename="smarteam.std.sequence.config.xml" schemaFilename="sequence.xsd" />
    <configNamespace namespace="smarteam.std.designCopy.config" filename="smarteam.std.designCopy.config.xml" schemaFilename="designCopy.xsd" />
    <configNamespace namespace="smarteam.std.fileExplorer.config" filename="smarteam.std.fileExplorer.config.xml" schemaFilename="fileExplorer.xsd" /> 
    <configNamespace namespace="smarteam.std.integration.proEngineer.config" filename="smarteam.std.integration.proEngineer.config.xml" schemaFilename="proEngineer.xsd" />
    <configNamespace namespace="smarteam.std.relatedObjectsPane.config" filename="smarteam.std.relatedObjectsPane.config.xml" schemaFilename="relatedObjectsPane.xsd" />
    <configNamespace namespace="smarteam.std.webEditor.viewsDisplaySettings.config" filename="smarteam.std.webEditor.viewsDisplaySettings.config.xml" schemaFilename="webEditorViewsDisplaySettings.xsd" />
    <configNamespace namespace="smarteam.std.webEditor.navigationViews.config" filename="smarteam.std.webEditor.navigationViews.config.xml" schemaFilename="webEditorNavigationViews.xsd" />
    <configNamespace namespace="smarteam.std.queries.config" filename="smarteam.std.queries.config.xml" schemaFilename="queries.xsd" />
</configNamespaces>

namespaces.xsd

<?xml version="1.0" encoding="UTF-8"?>

<xsd:schema targetNamespace="http://www.smarteam.com/dev/ns/config/namespaces/1.0" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://www.smarteam.com/dev/ns/config/namespaces/1.0" elementFormDefault="qualified">
    <xsd:element name="configNamespaces">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element name="configNamespace" type="tns:configNamespaceType" maxOccurs="unbounded" />
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>
    <xsd:complexType name="configNamespaceType">
        <xsd:attribute name="namespace" type="xsd:string" use="required" />
        <xsd:attribute name="filename" type="xsd:string" use="required" />
        <xsd:attribute name="schemaFilename" type="xsd:string" use="required" />
    </xsd:complexType>
</xsd:schema>

        在DATA目录中有一个DEFAULT目录，namespaces.xml 文档中声明的XML文件都在这个DEFAULT目录中，namespaces.xml 文档中声明的XSD文件都在Schemas目录中，我只大概知道这是应用程序中使用的XML架构配置文件，这样的配置在实际程序中怎么加载并使用呢？

        我一直也想不清楚，请大家仁者见仁，发表一下意见。

这是我刚搜到的例子：
      http://www.cnblogs.com/chorrysky/archive/2006/12/06/584535.html  (如何使用 XmlNamespaceManager 和 NameTable)
      http://chs.gotdotnet.com/quickstart/howto/doc/Xml/QueryXmlDocumentXPath.aspx  (如何使用 XPath 表达式查询 XML)
      http://www.cnblogs.com/chorrysky/archive/2006/12/06/584526.html