系统表名MSysAccessObjects,MSysObjects,MSysQueries,MSysRelationships等
但好像字段的定义是放在每个表里的了
你用DAO来作,这是MSDN的一个例子
Sub TableDefX()
Dim dbsNorthwind As Database
Dim tdfNew As TableDef
Dim tdfLoop As TableDef
Dim prpLoop As Property
Set dbsNorthwind = OpenDatabase("Northwind.mdb")
With dbsNorthwind
Debug.Print .TableDefs.Count & _
" TableDefs in " & .Name
' Enumerate TableDefs collection.
For Each tdfLoop In .TableDefs
Debug.Print " " & tdfLoop.Name
Next tdfLoop
With tdfNew
Debug.Print "Properties of " & .Name
' Enumerate Properties collection of new
' TableDef object, only printing properties
' with non-empty values.
For Each prpLoop In .Properties
Debug.Print " " & prpLoop.Name & " - " & _
IIf(prpLoop = "", "[empty]", prpLoop)
Next prpLoop
End With
End With
End Sub