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作者: 老马嗖嗖   发表日期: 2007-08-09
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数据库-链接字符串大全-连接字符串

刚发现的一个满全的数据库链接字符串,常见的不常见的都有!给大家参考一下!

大家可以用CTRL+F来搜索需要的,也可以通过‘引用’的链接进去原转摘的页面上去!


【全文】

·  SQL Server
  •  ODBC
    •  Standard Security:
"Driver={SQL Server};Server=Aron1;Database=pubs;Uid=myUsername;Pwd=myPassword;"
 
    •  Trusted connection:
"Driver={SQL Server};Server=Aron1;Database=pubs;Trusted_Connection=yes;"
 
    •  Prompt for username and password:
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server};Server=Aron1;DataBase=pubs;"
 
  •  OLE DB, OleDbConnection (.NET)
    •  Standard Security:
"Provider=sqloledb;Data Source=Aron1;Initial Catalog=pubs;User Id=myUsername;Password=myPassword;"
 
    •  Trusted Connection:
"Provider=sqloledb;Data Source=Aron1;Initial Catalog=pubs;Integrated Security=SSPI;"
(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
    •  Prompt for username and password:
oConn.Provider = "sqloledb"
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Data Source=Aron1;Initial Catalog=pubs;"
 
    •  Connect via an IP address:
"Provider=sqloledb;Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=myUsername;Password=myPassword;"
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
  •  SqlConnection (.NET)
    •  Standard Security:
"Data Source=Aron1;Initial Catalog=pubs;User Id=myUsername;Password=myPassword;"
   - or -
"Server=Aron1;Database=pubs;User ID=myUsername;Password=myPassword;Trusted_Connection=False"
   (both connection strings produces the same result)
 
    •  Trusted Connection:
"Data Source=Aron1;Initial Catalog=pubs;Integrated Security=SSPI;"
   - or -
"Server=Aron1;Database=pubs;Trusted_Connection=True;"
   (both connection strings produces the same result)
(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
    •  Connect via an IP address:
"Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=myUsername;Password=myPassword;"
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
    •  Declare the SqlConnection:
C#:
using System.Data.SqlClient;
SqlConnection oSQLConn = new SqlConnection();
oSQLConn.ConnectionString="my connection string";
oSQLConn.Open();
 
VB.NET:
Imports System.Data.SqlClient
Dim oSQLConn As SqlConnection = New SqlConnection()
oSQLConn.ConnectionString="my connection string"
oSQLConn.Open()
 
  •  Data Shape
    •  MS Data Shape
      "Provider=MSDataShape;Data Provider=SQLOLEDB;Data Source=Aron1;Initial Catalog=pubs;User ID=myUsername;Password=myPassword;"
Want to learn data shaping? Check out 4GuyfFromRolla's great article about Data Shaping >>
  •  Read more
    •  How to define which network protocol to use
      • Example:
        "Provider=sqloledb;Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=myUsername;Password=myPassword;"

Name
Network library
dbnmpntw
Win32 Named Pipes
dbmssocn
Win32 Winsock TCP/IP
dbmsspxn
Win32 SPX/IPX
dbmsvinn
Win32 Banyan Vines
dbmsrpcn
Win32 Multi-Protocol (Windows RPC)



      • Important note!
        When connecting through the SQLOLEDB provider use the syntax Network Library=dbmssocn
        and when connecting through MSDASQL provider use the syntax Network=dbmssocn
    •  All SqlConnection connection string properties
      • This table shows all connection string properties for the ADO.NET SqlConnection object. Most of the properties are also used in ADO. All properties and descriptions is from msdn.

Name
Default
Description
Application Name
 
The name of the application, or '.Net SqlClient Data Provider' if no application name is provided.
AttachDBFilename
-or-
extended properties
-or-
Initial File Name
 
The name of the primary file, including the full path name, of an attachable database. The database name must be specified with the keyword 'database'.
Connect Timeout
-or-
Connection Timeout
15
The length of time (in seconds) to wait for a connection to the server before terminating the attempt and generating an error.
Connection Lifetime
0
When a connection is returned to the pool, its creation time is compared with the current time, and the connection is destroyed if that time span (in seconds) exceeds the value specified by connection lifetime. Useful in clustered configurations to force load balancing between a running server and a server just brought on-line.
Connection Reset
'true'
Determines whether the database connection is reset when being removed from the pool. Setting to 'false' avoids making an additional server round-trip when obtaining a connection, but the programmer must be aware that the connection state is not being reset.
Current Language
 
The SQL Server Language record name.
Data Source
-or-
Server
-or-
Address
-or-
Addr
-or-
Network Address
 
The name or network address of the instance of SQL Server to which to connect.
Enlist
'true'
When true, the pooler automatically enlists the connection in the creation thread's current transaction context.
Initial Catalog
-or-
Database
 
The name of the database.
Integrated Security
-or-
Trusted_Connection
'false'
Whether the connection is to be a secure connection or not. Recognized values are 'true', 'false', and 'sspi', which is equivalent to 'true'.
Max Pool Size
100
The maximum number of connections allowed in the pool.
Min Pool Size
0
The minimum number of connections allowed in the pool.
Network Library
-or-
Net
'dbmssocn'
The network library used to establish a connection to an instance of SQL Server. Supported values include dbnmpntw (Named Pipes), dbmsrpcn (Multiprotocol), dbmsadsn (Apple Talk), dbmsgnet (VIA), dbmsipcn (Shared Memory) and dbmsspxn (IPX/SPX), and dbmssocn (TCP/IP).
The corresponding network DLL must be installed on the system to which you connect. If you do not specify a network and you use a local server (for example, "." or "(local)"), shared memory is used.
Packet Size
8192
Size in bytes of the network packets used to communicate with an instance of SQL Server.
Password
-or-
Pwd
 
The password for the SQL Server account logging on.
Persist Security Info
'false'
When set to 'false', security-sensitive information, such as the password, is not returned as part of the connection if the connection is open or has ever been in an open state. Resetting the connection string resets all connection string values including the password.
Pooling
'true'
When true, the SQLConnection object is drawn from the appropriate pool, or if necessary, is created and added to the appropriate pool.
User ID
 
The SQL Server login account.
Workstation ID
the local computer name
The name of the workstation connecting to SQL Server.



      • Note
        Use ; to separate each property.
        If a name occurs more than once, the value from the last one in the connection string will be used.
        If you are building your connection string in your app using values from user input fields, make sure the user can't change the connection string by inserting an additional property with another value within the user value.
·  SQL Server 2005
  •  SQL Native Client ODBC Driver
    •  Standard security:
"Driver={SQL Native Client};Server=Aron1;Database=pubs;UID=myUsername;PWD=myPassword;"
 
    •  Trusted connection:
"Driver={SQL Native Client};Server=Aron1;Database=pubs;Trusted_Connection=yes;"
Equivalents
Integrated Security=SSPI equals Trusted_Connection=yes
    •  Prompt for username and password:
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Native Client};Server=Aron1;DataBase=pubs;"
 
    •  Enabling MARS (multiple active result sets):
"Driver={SQL Native Client};Server=Aron1;Database=pubs;Trusted_Connection=yes;MARS_Connection=yes"
Equivalents
MultipleActiveResultSets=true equals MARS_Connection=yes

Using MARS with SQL Native Client, by Chris Lee >>
    •  Encrypt data sent over network:
"Driver={SQL Native Client};Server=Aron1;Database=pubs;Trusted_Connection=yes;Encrypt=yes"
 
    •  Attach a database file on connect to a local SQL Server Express instance:
"Driver={SQL Native Client};Server=.\SQLExpress;AttachDbFilename=c:\asd\qwe\mydbfile.mdf;Database=dbname;Trusted_Connection=Yes;"
   - or -
"Driver={SQL Native Client};Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf;Database=dbname;Trusted_Connection=Yes;"
   (use |DataDirectory| when your database file resides in the data directory)
Why is the "Database" parameter needed? Answer: If the database was previously attached, SQL Server does not reattach it (it uses the attached database as the default for the connection).
Download the SQL Native Client here >> (the package contains booth the ODBC driver and the OLE DB provider)
Using SQL Server 2005 Express? Don't miss the server name syntax: SERVERNAME\SQLEXPRESS (Substitute "SERVERNAME" with the name of the computer)




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