Creating my first DB connection in VBA, Excel 2007

If this code throws no error, does that mean it's opening a connection? If so, to what?

It stops nicely at a breakpoint and exits the function gracefully.


Private Sub Worksheet_SelectionChange(ByVal Target As Range)
    MsgBox "combo change to WS2"
    Dim Myconnection As Connection
    Dim Myrecordset As Recordset
    Dim MyWorkbook As String

    Set Myconnection = New Connection
    Set Myrecordset = New Recordset
 
    'Identify the workbook you are referencing
    MyWorkbook = Application.ThisWorkbook.FullName

    'Open connection to the workbook
    Myconnection.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
                  "Data Source=" & MyWorkbook & ";" & _
                  "Extended Properties=Excel 8.0;" & _
                  "Persist Security Info=False"



End Sub