救命啊！！vb+ao怎么关联外部数据表啊？？

我现在遇到了个问题：<BR><I></I> <I></I> <I></I> <I></I> <I></I> <I></I> 在空间数据中只放关联id,相关的属性数据全放在sql中（以id想关联）。<BR>在arcmap中确实有这个功能（添加关联关系）。
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<P>可是怎么在vb+ao独立开发的程序中使一个图层关联一个外部数据表，如sql数据表啊？<BR>可否给个提示啊！现在急啊。。。。<BR>给例子就更好了！呵呵！！</P>
<P>救命啊！救命啊！救命啊！<BR>急啊！急啊！急啊！急啊！</P>
<P>有人做过这功能吗？？<BR></P>

<P>The following is an example of how to use <STRONG>CreateRelationshipClass </STRONG>to create a simple relationship in a feature dataset.</P><CODE><PRE>[Visual Basic 6.0]<br>Dim pWS As IWorkspace<br>Dim pWSF As IWorkspaceFactory<br>  <br>Set pWSF = New SdeWorkspaceFactory<br>Set pWS = pWSF.OpenFromFile("C:\Documents and Settings\andy\Application Data\ESRI\ArcCatalog\mickey_gdb.sde", 0)<br>  <br>Dim pFWS As IFeatureWorkspace<br>Set pFWS = pWS<br>  <br>Dim pRelClassCont As IRelationshipClassContainer<br>Set pRelClassCont =     pFWS.OpenFeatureDataset("gdb.MontyLandbase")<br>Dim pOObjectClass As IObjectClass<br>  <br>Dim pDObjectclass  As IObjectClass<br>Set pOObjectClass = pFWS.OpenTable("GDB.OWNERS")<br>Set pDObjectclass = pFWS.OpenFeatureClass("gdb.Parcels")<br>  <br>Dim pReclass As IRelationshipClass<br>Set prelclass = pRelClassCont.CreateRelationshipClass("POwners", pOObjectClass, pDObjectclass, "owns",  "is owned by",  esriRelCardinalityOneToMany, esriRelNotificationNone, False, False, Nothing, "PROPERTY_ID", "",  "PROPERTY_ID", "")</PRE></CODE>

<P>例子地址：</P>
<P><a href="http://arcgisdeveloperonline.esri.com/ArcGISDeveloper/default.asp?URL=/ArcGISDeveloper/ComponentHelp/esriGeoDatabase/CreateRelationshipClass_Example.htm" target="_blank" >http://arcgisdeveloperonline.esri.com/ArcGISDeveloper/default.asp?URL=/ArcGISDeveloper/ComponentHelp/esriGeoDatabase/CreateRelationshipClass_Example.htm</A></P>

<P>非常感谢！！</P>
<P>马上研究！！</P>
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