With the RDS default handler enabled (recommend):
With oRdc
.Server = "http://carl2"
.Handler = "MSDFMAP.Handler"
.Connect = "Data Source=MyConnectTag;"
.Sql = "MySQLTag(""CA"")"
.Refresh
End With
The corresponding CONNECT and SQL sections in the default handler \WINNT\MSDFMAP.INI file would be:
[connect MyConnectTag]
Access = ReadWrite
Connect = "Provider=sqloledb;Data Source=(local);Initial Catalog=pubs;User Id=sa;Password=;"
[sql MySQLTag]
Sql = "Select * From Authors Where State = '?'"
For more information about the RDS Default Handler, see:
Q243245, Q230680, and RDS Customization Handler Microsoft articles
RDS DataControl - URL Property
To get records from a remote database:
With oRdc
.URL = "http://carlp0/Authors_GetByState.asp?state=CA"
.Refresh
End With
To save, set the URL property to an ASP web page:
With oRdc
.URL = "http://carlp0/rdsdatacontrol/Authors_Save.asp"
.SubmitChanges
End With
For more information, see: RDS URL Property
ADO URL Connections
ADO 2.5+ allows you to open up a Recordset based on XML returned from an ASP file over HTTP.
This feature doesn't use RDS at all.
ADO Recordset
To get records from a remote database:
oRs.Open "http://carlp0/Authors_GetByState.asp?state=CA", , _
adOpenStatic, adLockBatchOptimistic
To save changes, you must use the MSXML's XMLHTTP object to POST back the updated XML.
The Recordset's Update and UpdateBatch methods will not work in this case.
' Save Recordset into Stream
Set oStm = New ADODB.Stream
oRs.Save oStm, adPersistXML
' Use MSXML's XMLHTTP object to open ASP and post a XML stream
Set oXMLHTTP = New MSXML2.XMLHTTP30
oXMLHTTP.Open "POST", "http://carlp0/Authors_Save.asp", False
oXMLHTTP.Send oStm.ReadText
' If an error occurred
If oXMLHTTP.Status = 500 Then
Debug.Print oXMLHTTP.statusText
End If
For more information, see: ADO Recordset's Open Method
MS Remote Provider Connections
The following connections strings use Microsoft's remote provider (MS Remote). The MS Remote
provider tells ADO to communicate with the remote server (via the RDS DataFactory) and to use
the remote provider that is installed on the remote server.
WARNING: The RDS DataFactory can be a major security hole if not setup and configured correctly!
For more information, see RDS FAQ #24
MS Remote - Access (Jet)
If you want to use an ODBC DSN on the remote machine:
oConn.Open "Provider=MS Remote;" & _
"Remote Server=http://myServerName;" & _
"Remote Provider=MSDASQL;" & _
"DSN=AdvWorks;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
If you want to use an OLE DB Provider on the remote machine:
oConn.Open "Provider=MS Remote;" & _
"Remote Server=http://myServerName;" & _
"Remote Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\mydb.mdb;", _
"admin", ""
If you want to use an OLE DB Provider on the remote machine (via RDS DataFactory Default Handler):
oConn.Open "Provider=MS Remote;" & _
"Remote Server=http://myServerName;" & _
"Handler=MSDFMAP.Handler;" & _
"Data Source=MyAdvworksConn;"
The corresponding entry in the \winnt\Msdfmap.ini file would be:
[connect MyAdvworksConn]
Access = ReadWrite
Connect = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=mydb.mdb;" & _
"User Id=admin;" & _
"Password=;"
MS Remote - SQL Server
If you want to use an ODBC DSN on the remote machine:
oConn.Open "Provider=MS Remote;" & _
"Remote Server=http://myServerName;" & _
"Remote Provider=MSDASQL;" & _
"DSN=myDatabaseName;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
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