读书日记300字爱的教育:Driver={Microsoft Access Driver (*.mdb)};dqb=

Dim Conn,Rs
Sub ConnBegin()
If IsObject(Conn) = True Then
Exit Sub
Else
Set Conn = Server.CreateObject("Adodb.Connection")
Conn.Open "Driver={Microsoft Access Driver (*.mdb)};dqb="&Server.MapPath("Data.mdb")
Set Rs = Server.CreateObject( "Adodb.RecordSet" )
Conn.BeginTrans
End If
End Sub
'------------------------------------------------------------
Sub ConnEnd()
Conn.CommitTrans
Rs.Close
Set Rs = Nothing
Conn.Close
Set Conn = Nothing
End Sub

Call ConnBegin()
if isObject(Conn) = false then response.Write("conjia")
if isObject(Rs) = false then response.Write("rsjia")
On Error Resume Next
Rs.Open "Insert into biao (u_name) Values ('bbb')",Conn,1,2
Call ConnEnd()

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Rs何为为何为假？

如果把 Driver={Microsoft Access Driver (*.mdb)};dqb= 换成Provider=Microsoft.Jet.OLEDB.4.0; Data Source= 就好使了，这又是为什么？这两种驱动有什么区别，哪个更好一些？我通常都用第一种。

望高手指点