update in DB using stringbuilder,datarelations

[riyap]

Hi,
can anyone guide me how to update a access db with datatables and string builder
im trying to update 3 columns

does sb.Append(drRel .Item("id").ToS tring() & ",") this means im i updating the feild value into DB.
my program is a big process
so i just need help on update thing
it also have select command to filter records and call the stored proc in oracle nd insert and get the o/p value and update in access

i finished the above 2 steps but facing the problem with the update
Please anyone guide me in correct way

my code

 Private Sub updlog()
        Dim dsRel As New DataSet
        dsRel.Tables.Add(log2)
        dsRel.Tables.Add(log3)
        dsRel.Relations.Add("upd", dsRel.Tables("log2t2").Columns("userid"), dsRel.Tables("log3t3").Columns("userid"))
        Dim drRel As DataRow
        Try
            Dim sb As New StringBuilder
            For Each dr As DataRow In dsRel.Tables("log3t3").Rows
                For Each dc As DataColumn In dsRel.Tables("log3t3").Columns
                    If dc.ToString.Equals("userid") And dc.ToString.Equals("custno") Then
                        drRel = dr.GetParentRow("upd")
                        sb.Append(drRel.Item("iid").ToString() & ",")
                        sb.Append(drRel.Item("status").ToString() & ",")
                        sb.Append(drRel.Item("message").ToString() & ",")
                    Else
                        sb.Append(dr(dc).ToString() & ",")
                    End If
                Next
                sb.Remove(sb.Length - 1, 1)
                sb.Append(vbCrLf)
            Next
            'File.WriteAllText(fileggName, sb.ToString())
        Catch ex As Exception
            MessageBox.Show(ex.ToString)
            Throw New Exception(ex.ToString)
        Finally
            'delete the file after retrieval
            'File.Delete(Path.GetDirectoryName(filename) & "\schema.ini")
        End Try
    End Sub

Thanks in advance