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ADO连接数据库字符串大全

来源:Linuxdby.com 作者:Webmaster 时间:2007-04-23 点击: [收藏] [投稿]

If you want to use an OLE DB Provider on the remote machine:

oConn.Open "Provider=MS Remote;" & _
          "Remote Server=http://myServerName;" & _
          "Remote Provider=SQLOLEDB;" & _
         "Data Source=myServerName;" & _
         "Initial Catalog=myDatabaseName;" & _
         "User ID=myUsername;" & _
          "Password=myPassword;"

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=MyPubsConn;"

The corresponding entry in the \winnt\Msdfmap.ini file would be:

[connect MyPubsConn]
Access = ReadWrite
Connect = "Provider=SQLOLEDB;" & _
        "Data Source=myServerName;" & _
        "Initial Catalog=myDatabaseName;" & _
        "User ID=myUsername;" & _
        "Password=myPassword;"

For more information, see: Microsoft OLE DB Remoting Provider  and Q240838

Data Shape Provider Connections
MS DataShape - SQL Server
 
oConn.Open "Provider=MSDataShape;" & _
          "Data Provider=SQLOLEDB;" & _
          "Data Source=mySQLServerName;" & _
          "Initial Catalog=myDatabase;" & _
          "User ID=myUsername;" & _
          "Password=myPassword;"

Then use a Shape command with SQL strings:
sSQL = "SHAPE {select * from authors} " & _
      "APPEND ({select * from titleauthor} AS chapter " & _
      "RELATE au_id TO au_id)"

Or use a Shape command that calls Stored Procedures:
sSQL = "SHAPE {exec spAuthors_LoadAll} " & _
      "APPEND ({exec spTitleAuthor_LoadAll} AS chapter " & _
      "RELATE au_id TO au_id)"

For more information, see: Microsoft Data Shaping Service for OLE DB and Q288409

.NET Managed Provider Connections
SQL Client .NET Managed Provider (System.Data.SqlClient)
 
The SQL Client .NET Managed Provide allows you to connect to a Microsoft SQL Server 7.0
or 2000 database. For Microsoft SQL Server 6.0 or earlier, use the OLE DB .NET Data Provider
with the "SQL Server OLE DB Provider" (SQLOLEDB).

Dim oSQLConnection As SqlClient.SqlConnection
Dim sConnString As String

sConnString = "Data Source=(local);" & _
           "Initial Catalog=NorthWind;" & _
           "Integrated Security=SSPI;" & _
           "Pooling=True;" & _
           "Min Pool Size=10;" & _
           "Max Pool Size=50;" & _
           "Connection Lifetime=30;" & _
           "Connection Reset=True;" & _
           "Enlist=True;"
oSQLConnection = New SqlClient.SqlConnection(sConnString)
oSQLConnection.Open()

For more information, see: System.Data.SQL Namespace and .NET Data Providers
Note: 'SQL' namespace got renamed to 'SQLClient'

OLE DB .NET Managed Provider (System.Data.OleDb)
 
The OLE DB .NET Data Provider uses native OLE DB through COM interop to enable data access. 
To use the OLE DB .NET Data Provider, you must also use an OLE DB provider (e.g. SQLOLEDB,
MSDAORA, or Microsoft.JET.OLEDB.4.0).

For SQL Server OLE DB Provider (for SQL Server 6.0 or earlier)

Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String

sConnString = "Provider=sqloledb;" & _
           "Data Source=myServerName;" & _
           "Initial Catalog=myDatabaseName;" & _
           "User Id=myUsername;" & _
          "Password=myPassword;"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()

For JET OLE DB Provider:

Dim oOleDbConnection As OleDb.OleDbConnection
Dim sConnString As String

sConnString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
           "Data Source=C:\Work\nwind.mdb;" & _
           "User ID=Admin;" & _
           "Password="";"
oOleDbConnection = New OleDb.OleDbConnection(sConnString)
oOleDbConnection.Open()



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