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  • ADO銭俊方象垂忖憲堪寄畠
  • This page contains sample ADO connection strings for ODBC DSN / DSN-Less,
    OLE DB Providers, Remote Data Services (RDS), MS Remote, MS DataShape.

    Also included are ADO.NET connection strings for each .NET Managed Provider
    (SQLClient, OLEDB, and ODBC).

    These sample connection strings are compiled
    by Carl Prothman, a Microsoft Visual Basic MVP
    Enjoy!

     
    Table of Contents
    ODBC DSN Connections DSN
    File DSN

    ODBC DSN-Less Connections  ODBC Driver for AS/400
    ODBC Driver for Access
    ODBC Driver for dBASE
    ODBC Driver for Excel
    ODBC Driver for MySQL
    ODBC Driver for Oracle
    ODBC Driver for Paradox
    ODBC Driver for SQL Server
    ODBC Driver for Sybase
    ODBC Driver for Sybase SQL Anywhere
    ODBC Driver for Text
    ODBC Driver for Teradata
    ODBC Driver for Visual FoxPro

    OLE DB Data Link Connections Data Link File (UDL)

    OLE DB Data Provider Connections  OLE DB Provider for AS/400
    OLE DB Provider for Active Directory Service
    OLE DB Provider for DB2
    OLD DB Provider for Internet Publishing
    OLE DB Provider for Index Server
    OLE DB Provider for Microsoft Jet
    OLE DB Provider for ODBC Databases
    OLE DB Provider for Oracle (From Microsoft)
    OLE DB Provider for Oracle (From Oracle)
    OLE DB Provider for Simple Provider
    OLE DB Provider for SQL Server

    Remote Data Service (RDS) Connections RDS Data Control - Connect Property
    RDS Data Control - URL Property

    ADO URL Connections ADO Recordset

    MS Remote Provider Connections MS Remote - Access (Jet)
    MS Remote - SQL Server

    Data Shape Provider Connections  MS DataShape - SQL Server

    .NET Managed Provider Connections SQL Client .NET Managed Provider (System.Data.SqlClient)
    OLE DB .NET Managed Provider (System.Data.OleDb)
    ODBC .NET Managed Provider (System.Data.ODBC)

    ODBC DSN Connections
    Using an ODBC DSN (Data Source Name) is a two step process.

    1) You must first create the DSN via the "ODBC Data Source Administrator" program
    found in your computer's Control Panel (or Administrative Tools menu in Windows 2000).
    Make sure to create a SYSTEM DSN (not a USER DSN) when using ASP.
    Note: You can also create the DSN via VB code.

    2) Then use the following connection string - with your own DSN name of course.  ;-)

    ODBC - DSN
     
    oConn.Open "DSN=AdvWorks;" & _
              "Uid=Admin;" & _
              "Pwd=;

    You can also create and use a File DSN. Then use the following ADO Connection string:

    ODBC - File DSN
     
    oConn.Open "FILEDSN=c:\somepath\mydb.dsn;" & _
              "Uid=Admin;" & _
              "Pwd=;"

    For more information, see: About ODBC data sources and
    How to Use File DSNs and DSN-less Connections

    Note: The problem with DSN is that Users can (and will) modify them (or delete by mistake),
    then your program won't work so well... So it's better to use a DSN-Less or OLE DB Provider
    connection string with a Trusted Connection if possible!

    ODBC DSN-Less Connections
    ODBC Driver for AS/400
     
    oConn.Open "Driver={Client Access ODBC Driver (32-bit)};" & _
              "System=myAS400;" & _
              "Uid=myUsername;" & _
              "Pwd=myPassword;"

    For more information, see:  A Fast Path to AS/400 Client/Server

    ODBC Driver for Access
     
    For Standard Security:

    oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
              "Dbq=c:\somepath\mydb.mdb;" & _
              "Uid=Admin;" & _
              "Pwd=;"

    If you are using a Workgroup (System database):

    oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
              "Dbq=c:\somepath\mydb.mdb;" & _
              "SystemDB=c:\somepath\mydb.mdw;", _
              "admin", ""

    If MDB is located on a network share:

    oConn.Open "Driver={Microsoft Access Driver (*.mdb)};" & _
              "Dbq=\\myServer\myShare\myPath\myDb.mdb;"

    For more information, see: Microsoft Access Driver Programming Considerations

    ODBC Driver for dBASE
     
    oConn.Open "Driver={Microsoft dBASE Driver (*.dbf)};" & _
             "DriverID=277;" & _
             "Dbq=c:\somepath;"

    Note: Specify the filename in the SQL statement. For example:
         oRs.Open "Select * From user.dbf", oConn, , ,adCmdText

    Note: MDAC 2.1 (or greater) requires the Borland Database Engine (BDE) to update dBase DBF files. (Q238431).

    For more information, see: dBASE Driver Programming Considerations

    ODBC Driver for Excel
     
    oConn.Open "Driver={Microsoft Excel Driver (*.xls)};" & _
              "DriverId=790;" & _
              "Dbq=c:\somepath\mySpreadsheet.xls;" & _
              "DefaultDir=c:\somepath;"

    For more information, see: Microsoft Excel Driver Programming Considerations

    ODBC Driver for MySQL (via MyODBC)
     
    To connect to a local database

    oConn.Open "Driver={mySQL};" & _
              "Server=MyServerName;" & _
              "Option=16834;" & _
              "Database=mydb;"

    To connect to a remote database

    oConn.Open "Driver={mySQL};" & _
              "Server=db1.database.com;" & _
              "Port=3306;" & _
              "Option=131072;" & _
              "Stmt=;" & _
              "Database=mydb;" & _
              "Uid=myUsername;" & _
              "Pwd=myPassword;"

    For more information, see: Programs Known to Work with MyODBC

    ODBC Driver for Oracle
     
    For the current Oracle ODBC Driver from Microsoft:

    oConn.Open "Driver={Microsoft ODBC for Oracle};" & _
              "Server=OracleServer.world;" & _
              "Uid=myUsername;" & _
              "Pwd=myPassword;"

    For the older Oracle ODBC Driver from Microsoft:

    oConn.Open "Driver={Microsoft ODBC Driver for Oracle};" & _
              "ConnectString=OracleServer.world;" & _
              "Uid=myUsername;" & _
              "Pwd=myPassword;"

    For more information, see: Connection String Format and Attributes

    ODBC Driver for Paradox
     
    oConn.Open "Driver={Microsoft Paradox Driver (*.db)};" & _
              "DriverID=538;" & _
              "Fil=Paradox 5.X;" & _
              "DefaultDir=c:\dbpath\;" & _
              "Dbq=c:\dbpath\;" & _
              "CollatingSequence=ASCII;"

    Note: MDAC 2.1 (or greater) requires the Borland Database Engine (BDE) to update Paradox ISAM fDBF files. (Q230126).

    For more information, see: Paradox Driver Programming Considerations

    ODBC Driver for SQL Server
     
    For Standard Security:

    oConn.Open "Driver={SQL Server};" & _
              "Server=MyServerName;" & _
             "Database=myDatabaseName;" & _
             "Uid=myUsername;" & _
              "Pwd=myPassword;"

    For Trusted Connection security:

    oConn.Open "Driver={SQL Server};" & _
              "Server=MyServerName;" & _
              "Database=myDatabaseName;" & _
              "Uid=;" & _
              "Pwd=;"

    ' or

    oConn.Open "Driver={SQL Server};" & _
              "Server=MyServerName;" & _
              "Database=myDatab

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