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袖珍数据库连接查询手册

时间:2004/12/2 0:57:00来源:本站整理作者:蓝点我要评论(0)

下面的资料可能不太全,但是可以用来做平时的资料查询用的哦,希望能够帮上大家的忙,呵呵。



下面将简单介绍一下几种ADO连接方式:ODBC DSN,ODBC DSN-Less,

OLE DB Provider,和"MS Remote" Provider.

1。ODBC DSN连接

I.DSN

    oConn.Open "DSN=AdvWorks;" & _

        "UID=Admin;" & _

        "PWD=;"

注意:从MDAC2.1开始就不能够在使用这样的方式了,就是只把DSN文件名放在ConnectString中

      你必须同时使用DSN,UID,PWD标志。例如下面的方式在MDAC 2.1中将会出错:

    oConn.Open "AdvWorks"



II.File DSN

    oConn.Open "FILEDSN=\somepath\mydb.dsn;" & _

        "UID=Admin;" & _

        "PWD=;"

III.ODBC DSN-Less Connections

a)ODBC Text Driver

    oConn.Open _

        "Driver={Microsoft Text Driver (*.txt; *.csv)};" & _

        "Dbq=\somepath\;" & _

        "Extensions=asc,csv,tab,txt;" & _

        "Persist Security Info=False"

注意:需要在SQL语句中指定使用到的文件名。例如:

    oRs.Open "Select * From customer.csv", _

        oConn, adOpenStatic, adLockReadOnly, adCmdText

b)ODBC Driver for Access

    i)普通安全模式:

        oConn.Open _

            "Driver={Microsoft Access Driver (*.mdb)};" & _

            "Dbq=\somepath\mydb.mdb;" & _

            "Uid=Admin;" & _

            "Pwd=;"

    ii)如果使用了System database:

        oConn.Open _

            "Driver={Microsoft Access Driver (*.mdb)};" & _

            "Dbq=\somepath\mydb.mdb;" & _

            "SystemDB=\somepath\mydb.mdw;", _

            "admin", ""

c)ODBC Driver for SQL Server

    i)普通安全模式

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

            "Server=carl2;" & _

            "Database=pubs;" & _

            "Uid=sa;" & _

            "Pwd=;"

    ii)使用信任安全模式:

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

            "Server=carl2;" & _

            "Database=pubs;" & _

            "Uid=;" & _

            "Pwd=;"

    注意:要使用空白的Uid和Pwd           

d)ODBC Driver for Oracle

    i)使用现有的Oracle ODBC Driver from Microsoft:

        oConn.Open _

            "Driver={Microsoft ODBC for Oracle};" & _

            "Server=OracleServer.world;" & _

            "Uid=demo;" & _

            "Pwd=demo;"

    ii)使用老版本的Oracle ODBC Driver from Microsoft:

        oConn.Open _

            "Driver={Microsoft ODBC Driver for Oracle};" & _

            "ConnectString=OracleServer.world;" & _

            "Uid=demo;" & _

            "Pwd=demo;"

IIII)使用微软的OLE DB Data Link Connections方式Data Link File (UDL)

a)使用绝对路径

    oConn.Open "File Name=\somepath\pubs.udl;"

b)使用相对路径

    oConn.Open "File Name=pubs.udl;"

V)OLE DB Provider Connections方式

a)OLE DB Provider for ODBC Databases

    i)Access (Jet):

        oConn.Open _

            "Provider=MSDASQL;" & _

            "Driver={Microsoft Access Driver (*.mdb)};" & _

            "Dbq=\somepath\mydb.mdb;" & _

            "Uid=Admin;" & _

            "Pwd=;"

    ii)SQL Server:

        oConn.Open _

            "Provider=MSDASQL;" & _  

            "Driver={SQL Server};" & _

            "Server=carl2;" & _

            "Database=pubs;" & _

            "Uid=sa;" & _

            "Pwd=;"

b)OLE DB Provider for Microsoft Jet  (Access)

    i)普通安全模式:

        oConn.Open _

            "Provider=Microsoft.Jet.OLEDB.4.0;" & _

            "Data Source=\somepath\mydb.mdb;" & _

            "User Id=admin;" & _

            "Password=;"

    ii)如果使用了System database:

        oConn.Open _

            "Provider=Microsoft.Jet.OLEDB.4.0;" & _

            "Data Source=\somepath\mydb.mdb;" & _

            "Jet OLEDB:System Database=system.mdw;", _

            "admin", ""

    注意:当使用OLE DB Provider4.0版本是,需要把MDB和MDW文件转换成4.0的数据库格式

    iii)如果MDB需要一个数据库密码的话:

        oConn.Open _

            "Provider=Microsoft.Jet.OLEDB.4.0;" & _

            "Data Source=\somepath\mydb.mdb;" & _

            "Jet OLEDB:Database Password=MyDbPassword;", _

            "admin", ""

c)OLE DB Provider for Excel Spreadsheet:

        oConn.Open _

            "Provider=Microsoft.Jet.OLEDB.4.0;" & _

            "Data Source=\somepath\expenses.xls;" & _

            "Extended Properties=""Excel 8.0;HDR=Yes;"";"

    注意: "HDR=Yes"表示在第一行中是行标题,在provider中将不把第一行包括入recordset中

d)OLE DB Provider for SQL Server

    i)普通安全模式:

        oConn.Open "Provider=sqloledb;" & _

            "Network Library=DBMSSOCN;" & _

            "Data Source=carl2;" & _

            "Initial Catalog=pubs;" & _

            "User Id=sa;" & _

            "Password=;"

    ii)使用信任安全模式:

        oConn.Open "Provider=sqloledb;" & _

            Network Library=DBMSSOCN;" & _

            "Data Source=carl2;" & _

            "Initial Catalog=pubs;" & _

            "Trusted_Connection=yes;"

    注意:"Network Library=DBMSSOCN"声明OLE DB使用TCP/IP替代Named Pipes.

e)OLE DB Provider for Oracle

    oConn.Open "Provider=msdaora;" & _

        "Data Source=OracleServer.world;" & _

        "User Id=sa;" & _

        "Password=;"

(VI)Remote OLE DB Provider Connections方式(就是我一直在研究的RDS方式哦,呵呵。):

a)MS Remote - Access (Jet)

    i)ODBC DSN:

        oConn.Open "Remote Server=http://carl2;" & _

            "Remote Provider=MSDASQL;" & _

            "DSN=AdvWorks;" & _

            "Uid=admin" & _

            "Pwd=;"

    ii)OLE DB Provider:

        oConn.Open "Provider=MS Remote;" & _

            "Remote Server=http://carl2;" & _

            "Remote Provider=Microsoft.Jet.OLEDB.4.0;" & _

            "Data Source=\somepath\mydb.mdb;", _

            "admin", ""

    iii)OLE DB Provider自定义事务对象

        oConn.Open "Provider=MS Remote;" & _

            "Remote Server=http://carl2;" & _

            "Handler=MSDFMAP.Handler;" & _

            "Data Source=MyAdvworksOLEDBConnectTag;"

b)MS Remote - SQL Server

    i)ODBC DSN:

        oConn.Open "Remote Server=http://carl2;" & _

            "Remote Provider=MSDASQL;" & _

            "Network Library=DBMSSOCN;" & _

            "DSN=Pubs;" & _

            "Uid=sa" & _

            "Pwd=;"

    ii)OLE DB Provider

        oConn.Open "Provider=MS Remote;" & _

            "Remote Server=http://carl2;" & _

            "Remote Provider=SQLOLEDB;" & _

            "Network Library=DBMSSOCN;" & _

            "Data Source=carl2;" & _

            "Initial Catalog=pubs;" & _

            "User ID=sa;" & _

            "Password=;"






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