ADO: Метод Update и UpdateBatch - VB

Public Sub UpdateBatchX()
 
   Dim rstTitles As ADODB.Recordset
   Dim strCnn As String
   Dim strTitle As String
   Dim strMessage As String
 
   ' Assign connection string to variable.
      strCnn = 'Provider=sqloledb;' & _
      'Data Source=srv;Initial Catalog=pubs;User Id=sa;Password=; '
 
   Set rstTitles = New ADODB.Recordset
   rstTitles.CursorType = adOpenKeyset
   rstTitles.LockType = adLockBatchOptimistic
   rstTitles.Open 'titles', strCnn, , , adCmdTable
   
   rstTitles.MoveFirst
 
   ' Loop through recordset and ask user if she wants 
   ' to change the type for a specified title.
   Do Until rstTitles.EOF
      If Trim(rstTitles!Type) = 'psychology' Then
         strTitle = rstTitles!Title
         strMessage = 'Title: ' & strTitle & vbCr & _
            'Change type to self help?'
 
         If MsgBox(strMessage, vbYesNo) = vbYes Then
            rstTitles!Type = 'self_help'
         End If
      End If
 
      rstTitles.MoveNext
   Loop
 
   ' Ask the user if she wants to commit to all the 
   ' changes made above.
   If MsgBox('Save all changes?', vbYesNo) = vbYes Then
      rstTitles.UpdateBatch
   Else
      rstTitles.CancelBatch
   End If
 
   ' Print current data in recordset.
   rstTitles.Requery
   rstTitles.MoveFirst
   Do While Not rstTitles.EOF
      Debug.Print rstTitles!Title & ' - ' & rstTitles!Type
      rstTitles.MoveNext
   Loop
 
   ' Restore original values because this is a demonstration.
   rstTitles.MoveFirst
   Do Until rstTitles.EOF
      If Trim(rstTitles!Type) = 'self_help' Then
         rstTitles!Type = 'psychology'
      End If
      rstTitles.MoveNext
   Loop
   rstTitles.UpdateBatch
 
   rstTitles.Close
 
End Sub