Foreign Property Example

This example shows how the Foreign property can indicate which Index objects in a TableDef are foreign key indexes. Such indexes are created by the Microsoft Jet database engine when a Relation is created. The default name for the foreign key indexes is the name of the primary table plus the name of the foreign table. The ForeignOutput function is required for this procedure to run.

Sub ForeignX()

    Dim dbsNorthwind As Database

    Set dbsNorthwind = OpenDatabase("Northwind.mdb")

    With dbsNorthwind
        ' Print report on foreign key indexes from two 
        ' TableDef objects and a QueryDef object.
        ForeignOutput .TableDefs!Products
        ForeignOutput .TableDefs!Orders
        ForeignOutput .TableDefs![Order Details]

        .Close
    End With

End Sub

Function ForeignOutput(tdfTemp As TableDef)

    Dim idxLoop As Index

    With tdfTemp
        Debug.Print "Indexes in " & .Name & " TableDef"
        ' Enumerate the Indexes collection of the specified 
        ' TableDef object.
        For Each idxLoop In .Indexes
            Debug.Print "  " & idxLoop.Name
            Debug.Print "    Foreign = " & idxLoop.Foreign
        Next idxLoop
    End With

End Function