请各位大侠详解,小第感激不尽.....!!!急...
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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 PropertyADO URL Connections ADO RecordsetMS Remote Provider Connections MS Remote - Access (Jet)
MS Remote - SQL ServerData 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 ConsiderationsODBC 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, , ,adCmdTextNote: MDAC 2.1 (or greater) requires the Borland Database Engine (BDE) to update dBase DBF files. (Q238431).For more information, see: dBASE Driver Programming ConsiderationsODBC 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
http://community.csdn.net/Expert/topic/4465/4465292.xml?temp=.9706995
To connect to a local databaseoConn.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 MyODBCODBC 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 ConsiderationsODBC 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=myDatabaseName;" & _
"Trusted_Connection=yes;"
To Prompt user for username and password
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server};" & _
"Server=MyServerName;" & _
"DataBase=myDatabaseName;"
For more information, see: SQLDriverConnect (ODBC)
ODBC Driver for Sybase
If using the Sybase System 11 ODBC Driver:
oConn.Open "Driver={SYBASE SYSTEM 11};" & _
"Srvr=myServerName;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
If using the Intersolv 3.10 Sybase ODBC Driver:
oConn.Open "Driver={INTERSOLV 3.10 32-BIT Sybase};" & _
"Srvr=myServerName;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
For more information, see: Sybase System 10 ODBC Driver Reference Guide
oConn.Open "ODBC; Driver=Sybase SQL Anywhere 5.0;" & _
"DefaultDir=c:\dbpath\;" & _
"Dbf=c:\sqlany50\mydb.db;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
"Dsn="""";"
Note: Including the DSN tag with a null string is absolutely critical or else you get the dreaded -7778 error.
For more information, see: Sybase SQL Anywhere User Guide
ODBC Driver for Teradata
oConn.Open "Provider=Teradata;" & _
"DBCName=MyDbcName;" & _
"Database=MyDatabaseName;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
For more information, see Teradata ODBC Driver
ODBC Driver for Text
oConn.Open "Driver={Microsoft Text Driver (*.txt; *.csv)};" & _
"Dbq=c:\somepath\;" & _
"Extensions=asc,csv,tab,txt;" & _
"Persist Security Info=False"
Note: Specify the filename in the SQL statement. For example:
oRs.Open "Select * From customer.csv", _
oConn, adOpenStatic, adLockReadOnly, adCmdText
For more information, see: Text File Driver Programming Considerations
ODBC Driver for Visual FoxPro
With a database container:
oConn.Open "Driver={Microsoft Visual FoxPro Driver};" & _
"SourceType=DBC;" & _
"SourceDB=c:\somepath\mySourceDb.dbc;" & _
"Exclusive=No;"
Without a database container (Free Table Directory):
oConn.Open "Driver={Microsoft Visual FoxPro Driver};" & _
"SourceType=DBF;" & _
"SourceDB=c:\somepath\mySourceDbFolder;" & _
"Exclusive=No;"
For more information, see: Visual FoxPro ODBC Driver and Q165492
OLE DB Data Link Connections
Data Link File (UDL)
For Absolute Path:
oConn.Open "File Name=c:\somepath\myDatabaseName.udl;"
For Relative Path:
oConn.Open "File Name=myDatabaseName.udl;"
For more information, see: HOWTO: Use Data Link Files with ADO
Note: Windows 2000 no longer contains the "New | Microsoft Data Link" menu
anymore. You can add the Data Link menu back in the menu list by running the
"C:\Program Files\Common Files\System\Ole DB\newudl.reg" reg file,
then right-click on the desktop and select "New | Microsoft Data Link" menu.
Or you can also create a Data Link file by creating a text file and change it's
file extension to ".udl", then double-click the file.
OLE DB Provider Connections
OLE DB Provider for AS/400
oConn.Open "Provider=IBMDA400;" & _
"Data source=myAS400;"
"User Id=myUsername;" & _
"Password=myPassword;"
For more information, see: A Fast Path to AS/400 Client/Server
OLE DB Provider for Active Directory Service
oConn.Open "Provider=ADSDSOObject;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
For more information, see: Microsoft OLE DB Provider for Microsoft Active Directory Service
OLE DB Provider for DB2
oConn.Open = "Provider=DB2OLEDB;" &
"Network Transport Library=TCPIP;" &
"Network Address=MyServer;" & _
"Package Collection=MyPackage;" &
"Host CCSID=1142"
"Initial Catalog=MyDB;" &
"User ID=MyUsername;" & _
"Password=MyPassword;"
For more information, see: OLE DB Provider for DB2
and INF: Configuring Data Sources for the Microsoft OLE DB Provider for DB2
OLE DB Provider for Index Server
oConn.Open "Provider=msidxs;" & _
"Data source=MyCatalog;"
For more information, see: Microsoft OLE DB Provider for Microsoft Indexing Service
OLE DB Provider for Internet Publishing
oConn.Open "Provider=MSDAIPP.DSO;" & _
"Data Source=http://mywebsite/myDir;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
For more information, see: Microsoft OLE DB Provider for Internet Publishing and Q245359
OLE DB Provider for Microsoft Jet
For standard security:
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\myDb.mdb;" & _
"User Id=admin;" & _
"Password=;"
If using a Workgroup (System Database):
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\mydb.mdb;" & _
"Jet OLEDB:System Database=MySystem.mdw;", _
"admin", ""
Note, remember to convert both the MDB and the MDW to the 4.0 database format when using the 4.0 OLE DB Provider.
If MDB has a database password:
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\mydb.mdb;" & _
"Jet OLEDB:Database Password=MyDbPassword;", _
"admin", ""
If MDB is located on a network share:
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=\\myServer\myShare\myPath\myDb.mdb;
If want to open up the Access database exclusively:
oConn.Mode = adModeShareExclusive
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\myDb.mdb;" & _
"User Id=admin;" & _
"Password=;"
For more information, see: OLE DB Provider for Microsoft Jet, Q191754, Q225048, Q239114, and Q271908
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\myExcelSpreadsheet.xls;" & _
"Extended Properties=""Excel 8.0;HDR=Yes;"";"
Where "HDR=Yes" means that there is a header row in the cell range
(or named range), so the provider will not include the first row of the
selection into the recordset. If "HDR=No", then the provider will include
the first row of the cell range (or named ranged) into the recordset.
For more information, see: Q278973
You can also open a Text File using the "OLE DB Provider for Microsoft Jet"
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=c:\somepath\;" & _
"Extended Properties=""text;HDR=Yes;FMT=Delimited;"";"
' Then open a recordset based on a select on the actual file
oRs.Open "Select * From MyTextFile.txt", oConn, adOpenStatic, adLockReadOnly, adCmdText
For more information, see: Q262537
OLE DB Provider for ODBC Databases
For Access (Jet):
oConn.Open "Provider=MSDASQL;" & _
"Driver={Microsoft Access Driver (*.mdb)};" & _
"Dbq=c:\somepath\mydb.mdb;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
For SQL Server:
oConn.Open "Provider=MSDASQL;" & _
"Driver={SQL Server};" & _
"Server=myServerName;" & _
"Database=myDatabaseName;" & _
"Uid=myUsername;" & _
"Pwd=myPassword;"
For more information, see: Microsoft OLE DB Provider for ODBC
OLE DB Provider for Oracle (from Microsoft)
oConn.Open "Provider=msdaora;" & _
"Data Source=MyOracleDB;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
For more information, see: Microsoft OLE DB Provider for Oracle
OLE DB Provider for Oracle (from Oracle)
For Standard Security:
oConn.Open "Provider=OraOLEDB.Oracle;" & _
"Data Source=MyOracleDB;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
For a Trusted Connection:
oConn.Open "Provider=OraOLEDB.Oracle;" & _
"Data Source=MyOracleDB;" & _
"User Id=/;" & _
"Password=;"
' Or
oConn.Open "Provider=OraOLEDB.Oracle;" & _
"Data Source=MyOracleDB;" & _
"OSAuthent=1;"
Note: "Data Source=" must be set to the appropriate Net8 name which is known to the naming method in use. For example, for Local Naming, it is the alias in the tnsnames.ora file; for Oracle Names, it is the Net8 Service Name.
For more information, see: Connecting to an Oracle Database
(Note, if you get a Logon dialog, then click Cancel, then perform a one-time free signup with Oracle's TechNet system)
OLE DB Provider for Simple Provider
The Microsoft OLE DB Simple Provider (OSP) allows ADO to access any data for which a provider has
been written using the OLE DB Simple Provider Toolkit. Simple providers are intended to access data
sources that require only fundamental OLE DB support, such as in-memory arrays or XML documents.
OSP in MDAC 2.6 has been enhanced to support opening hierarchical ADO Recordsets over arbitrary
XML files. These XML files may contain the ADO XML persistence schema, but it is not required. This
has been implemented by connecting the OSP to the MSXML2.DLL, therefore MSXML2.DLL or newer is
required.
oConn.Open "Provider=MSDAOSP;" & _
"Data Source=MSXML2.DSOControl.2.6;"
oRS.Open "http://WebServer/VirtualRoot/MyXMLFile.xml", oConn
For more information, see: Microsoft OLE DB Simple Provider
OLE DB Provider for SQL Server
For Standard Security:
oConn.Open "Provider=sqloledb;" & _
"Data Source=myServerName;" & _
"Initial Catalog=myDatabaseName;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
For a Trusted Connection:
oConn.Open "Provider=sqloledb;" & _
"Data Source=myServerName;" & _
"Initial Catalog=myDatabaseName;" & _
"Integrated Security=SSPI;"
To connect to a "Named Instance" (SQL Server 2000)
oConn.Open "Provider=sqloledb;" & _
"Data Source=myServerName\Inst2;" & _
"Initial Catalog=myDatabaseName;" & _
"User Id=myUsername;" & _
"Password=myPassword;"
To Prompt user for username and password:
oConn.Provider = "sqloledb"
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Data Source=myServerName;" & _
"Initial Catalog=myDatabaseName;"
To connect via an IP address:
oConn.Open "Provider=sqloledb;" & _
"Data Source=xxx.xxx.xxx.xxx,1433;" & _
"Network Library=DBMSSOCN;" & _
"Initial Catalog=myDatabaseName;" & _
"User ID=myUsername;" & _
"Password=myPassword;"
Note:
- xxx.xxx.xxx.xxx is an IP address
- "Network Library=DBMSSOCN" tells OLE DB to use TCP/IP rather than Named Pipes (Q238949)
- 1433 is the default port number for SQL Server
- You can also add "Encrypt=yes" for encryption
For more information, see: Microsoft OLE DB Provider for SQL Server
var
path_files,connectstr:string;
begin
path_files:=ExtractFilePath(Application.EXEName);
connectstr:='Provider=Microsoft.Jet.OLEDB.4.0;Password="";Data Source='+trim(path_files)+'\data\DasIcCard.MDB'
+';Persist Security Info=True;'+
'Jet OLEDB:Database Password=123321;'+
'Jet OLEDB:Database Locking Mode=1;';//123321为ACCESS数据库的密码
try
ADOConnection1.Connected:=false;
ADOConnection1.ConnectionString:=connectstr;
ADOConnection1.Connected:=true;
except
showmessage('连接收费数据库失败,请确认补充程序是否在正确的文件夹');
form1.close;
exit;
end;
+ 'Database Password=密码;'
+ 'Data Source=' + ExtractFilePath(Application.ExeName) + 'data.mdb'
+ ';Persist Security Info=False';
数据库文件data.mdb就放在执行文件同一目录下
ADOConncetion1.ConnectionString:='Provider=Microsoft.Jet.OLEDB.4.0;User ID=admin;Data Source=d:\temp\data.mdb;Persist Security Info=False;Jet OLEDB:Database Password=123456';
其中d:\temp\data.mdb为你的数据库
123456为你的口令