如何把数据库结构或者是单一的表结构导出成XML文件

ArcGIS中可以将整个数据库库结构输出成XML文件，单一的表的表结构没有单独导出成XML文件，而是需要把表结构和数据一起导出成XML文件。在ArcGIS Engine同样都可以有相应的接口来实现。

过程描述

在Engine中使用IGdbXmlExport和IGDBXmlImport接口来实现。下面是导出整个库结构的例子代码：
Private Sub ExportWS_Schema(db As String, XmlFile As String)

Dim pWSF As IWorkspaceFactory
Set pWSF = New AccessWorkspaceFactory

'*** 打开***
Dim pWS As IWorkspace
Set pWS = pWSF.OpenFromFile(App.Path + db, 0)

Dim pExporter As IGdbXmlExport
Set pExporter = New GdbExporter

pExporter.ExportWorkspaceSchema pWS, XmlFile, False, True

End Sub

Private Sub cmdExportWS_Schema_Click()

Me.MousePointer = vbHourglass

'*** PGDB 的位置 ***
Dim db As String
db = "GN.mdb"

'*** xml的位置 ***
Dim XmlFile As String
XmlFile = App.Path + "GN.xml"

ExportWS_Schema db, XmlFile

MsgBox "Exported Geodatabase Workspace Schema to XML.", vbInformation

End Sub