经常使用数据库链接字符串集合

数据库链接字符串
1、SQL Server

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ODBC
标准链接
Driver={SQL Server};Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
受信的链接
Driver={SQL Server};Server=myServerAddress;Database=myDataBase;Trusted_Connection=Yes;
指定账号和密码
oConn.Properties("Prompt") = adPromptAlways
Driver={SQL Server};Server=myServerAddress;Database=myDataBase;
OLE DB, OleDbConnection (.NET) 标准链接
Provider=sqloledb;Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;
受信的链接
Provider=sqloledb;Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=SSPI;
使用serverName\instanceName做为数据源能够指定SQL Server实例。
链接到一个SQL Server的实例 指定服务器实例的表达式和其余SQL Server的链接字符串相同。
Provider=sqloledb;Data Source=myServerName\theInstanceName;Initial Catalog=myDataBase;Integrated Security=SSPI;
指定账户和密码
oConn.Provider = "sqloledb"
oConn.Properties("Prompt") = adPromptAlways
Data Source=myServerAddress;Initial Catalog=myDataBase;
使用IP地址的链接
Provider=sqloledb;Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;
SqlConnection (.NET) 标准链接
Data Source=myServerAddress;Initial Catalog=myDataBase;User Id=myUsername;Password=myPassword;
Standard Security alternative syntax
Server=myServerAddress;Database=myDataBase;User ID=myUsername;Password=myPassword;Trusted_Connection=False;
受信任的链接
Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=SSPI;
Trusted Connection alternative syntax
Server=myServerAddress;Database=myDataBase;Trusted_Connection=True;

链接到SQL Server实例 指定服务器实例的表达式和其余SQL Server的链接字符串相同。
Server=myServerName\theInstanceName;Database=myDataBase;Trusted_Connection=True;

Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=SSPI;User ID=myDomain\myUsername;Password=myPassword;
仅能用于CE设备。

带有IP地址的链接
Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;

指定包的大小
Server=myServerAddress;Database=myDataBase;User ID=myUsername;Password=myPassword;Trusted_Connection=False;Packet Size=4096;
默认的包大小为8192字节。
Data Shape MS Data Shape
Provider=MSDataShape;Data Provider=SQLOLEDB;Data Source=myServerAddress;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;
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2、MYSQL
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MyODBC

MyODBC 2.50 本地数据库

Driver={mySQL};Server=localhost;Option=16834;Database=myDataBase;

MyODBC 2.50 远程数据库

Driver={mySQL};Server=myServerAddress;Port=3306;Option=131072;Stmt=; Database=myDataBase;Uid=myUsername;Pwd=myPassword;

MyODBC 3.51 本地数据库

Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=myDataBase; User=myUsername;Password=myPassword;Option=3;

MyODBC 3.51 远程数据库

Driver={MySQL ODBC 3.51 Driver};Server=data.domain.com;Port=3306;Database=myDataBase;User=myUsername; Password=myPassword;Option=3;

OLE DB, OleDbConnection (.NET)

标准

Provider=MySQLProv;Data Source=mydb;User Id=myUsername;Password=myPassword;

Connector/Net 1.0 (.NET)

标准

Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

默认端口号是3306.

指定端口号

Server=myServerAddress;Port=1234;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

命名管道

Server=myServerAddress;Port=-1;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

若是端口是-1，意思是告诉驱动程序使用命名管道网络协议来链接数据库。

MySqlConnection (.NET)

eInfoDesigns.dbProvider

Data Source=myServerAddress;Database=myDataBase;User ID=myUsername;Password=myPassword;Command Logging=false;

SevenObjects MySqlClient (.NET)

标准

Host=myServerAddress;UserName=myUsername;Password=myPassword;Database=myDataBase;

Core Labs MySQLDirect (.NET)

标准

User ID=root;Password=myPassword;Host=localhost;Port=3306;Database=myDataBase; Direct=true;Protocol=TCP;Compress=false;Pooling=true;Min Pool Size=0;Max Pool Size=100;Connection Lifetime=0;

MySQLDriverCS (.NET)

标准

Location=myServerAddress;Data Source=myDataBase;UserID=myUsername;Password=myPassword;Port=3306;Extended Properties="""";

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3、Oracle
ODBC

新版本

Driver={Microsoft ODBC for Oracle};Server=myServerAddress;Uid=myUsername;Pwd=myPassword;

旧版本

Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;

OLE DB, OleDbConnection (.NET)

标准链接
此链接字符串适用了微软的驱动。
Provider=msdaora;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;

受信链接

Provider=msdaora;Data Source=MyOracleDB;Persist Security Info=False;Integrated Security=Yes;

标准链接
由Oracle提供的驱动。
Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;

受信链接

Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1;

Oracle.DataAccess.Client.OracleConnection

标准

Data Source=TORCL;User Id=myUsername;Password=myPassword;

标准安全链接

Data Source=TORCL;Integrated Security=SSPI;

使用ODP.NET而不使用tnsnames.ora

Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MyOracleSID)));User Id=myUsername;Password=myPassword;

OracleConnection, Oracle Data Provider, ODP.NET, System.Data.OracleClient.OracleConnection

标准

Data Source=MyOracleDB;Integrated Security=yes;

用于8i RC3及之后的版本

指定用户名和密码

Data Source=MyOracleDB;User Id=myUsername;Password=myPassword;Integrated Security=no;

用于8i RC3及之后的版本

忽略tnsnames.ora
另外一种不须要使用DSN的链接方式。
SERVER=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyOracleSID)));uid=myUsername;pwd=myPassword;

使用上面的链接字符串可能会致使Visual Studio报告错误，若是您在使用中出现了这些问题，请使用下面的这种链接方式。
Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyOracleSID)));User Id=myUsername;Password=myPassword;

使用链接池
若是链接池服务程序找不到已经存在的链接池，它将根据链接字符串建立一个新的池，不然将循环使用池中已存在的链接。
Data Source=myOracleDB;User Id=myUsername;Password=myPassword;Min Pool Size=10;Connection Lifetime=120;Connection Timeout=60;Incr Pool Size=5;Decr Pool Size=2;

Windows身份验证

Data Source=myOracleDB;User Id=/;

特权链接
使用SYSDBA
Data Source=myOracleDB;User Id=SYS;Password=SYS;DBA Privilege=SYSDBA;

特权链接
使用SYSOPER
Data Source=myOracleDB;User Id=SYS;Password=SYS;DBA Privilege=SYSOPER;

密码过时处理过程
当使用一个链接字符串链接数据库后，出现“密码已过时”的错误时，请执行OpenWithNewPassword命令来提供新密码。
Data Source=myOracleDB;User Id=myUsername;Password=myPassword;
oConn.OpenWithNewPassword(sTheNewPassword);

Proxy验证

Data Source=myOracleDB;User Id=myUsername;Password=myPassword;Proxy User Id=pUserId;Proxy Password=pPassword;

Core Labs OraDirect (.NET)

Standard

User ID=myUsername;Password=myPassword;Host=ora;Pooling=true;Min Pool Size=0;Max Pool Size=100;Connection Lifetime=0;

Data Shape

MS Data Shape

Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;User Id=myUsername;Password=myPassword;

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4、Access
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ODBC

标准安全策略

Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;Uid=Admin;Pwd=;

工做组

Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;SystemDB=C:\mydatabase.mdw;

独占模式

Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;Exclusive=1;Uid=admin;Pwd=;

管理员模式
若是您须要在程序中使用 CREATE USER, CREATE GROUP, ADD USER, GRANT, REVOKE 和DEFAULTS等命令，您就须要使用此链接字符串。
Driver={Microsoft Access Driver (*.mdb)};Dbq=C:\mydatabase.mdb;Uid=Admin;Pwd=;ExtendedAnsiSQL=1;

OLE DB, OleDbConnection (.NET)

标准安全策略

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;User Id=admin;Password=;

使用数据库密码
若是您的Access数据库设置了密码，您就须要参照以下链接字符串将密码写入后才可以正常使用。
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;

工做组(系统数据库)

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:System Database=system.mdw;

工做组(系统数据库)而且制定用户名和密码

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:System Database=system.mdw;User ID=myUsername;Password=myPassword;

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5、DBF / FoxPro
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如下字符串以及实例将告诉您如何链接到 DBF / FoxPro.
若是您使用的是 2.x DBF，您没必要使用dBase或者Jet driver，使用"Visual FoxPro / FoxPro 2.x"替换VFP driver。Visual FoxPro ODBC和OLEDB驱动能够用于全部的Foxpro数据表，其中包括很老的foxbase数据表以及dBaseII, dBaseIII, Clipper文件等。
ODBC

标准

Driver={Microsoft dBASE Driver (*.dbf)};DriverID=277;Dbq=c:\mydbpath;

远程驱动

Driver={Microsoft dBase Driver (*.dbf)};datasource=dBase Files;

SQL表达式： "select * from \\remotemachine\thefile.dbf"

OLE DB, OleDbConnection (.NET)

标准

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\folder;Extended Properties=dBASE IV;User ID=Admin;Password=;
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6、Excel
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ODBC

标准

Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=C:\MyExcel.xls;DefaultDir=c:\mypath;

SQL表达式"SELECT * FROM [sheet1$]"。例如：在excel工做表名称后面跟"$"字符而且使用"[" "]"将其括起来。

OLE DB

标准

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyExcel.xls;Extended Properties="Excel 8.0;HDR=Yes;IMEX=1";

请注意！
字符串中的引号 " 须要根据您使用的语言来进行转义。例如：
c#, c++ \"
VB6, VBScript ""
xml (web.config等) "
或者您也能够直接使用单引号 ' 。
"HDR=Yes;" 表示工做表的第一行是表头，没有数据。 "HDR=No;"与之相反。
"IMEX=1;"告诉驱动程序始终将"intermixed"数据类型(numbers, dates, strings等等)做为文本型读取。注意：该选项可能引发Excel工做表写权限的修改。
SQL表达式"SELECT * FROM [sheet1$]"。例如：在excel 工做表名称后面跟字符"$"而且适用"[" "]"括起来。

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7、Visual FoxPro / FoxPro 2.x
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OLE DB, OleDbConnection (.NET)

Database container (.DBC)

Provider=vfpoledb.1;Data Source=C:\MyDbFolder\MyDbContainer.dbc;Collating Sequence=machine;

Free table directory

Provider=vfpoledb.1;Data Source=C:\MyDataDirectory\;Collating Sequence=general;

Force the provider to use an ODBC DSN

Provider=vfpoledb.1;DSN=MyDSN;

ODBC

Database container (.DBC)

Driver={Microsoft Visual FoxPro Driver};SourceType=DBC;SourceDB=c:\myvfpdb.dbc;Exclusive=No; NULL=NO;Collate=Machine;BACKGROUNDFETCH=NO;DELETED=NO;

Note that DELETED=NO will cause the driver to include deleted rows in the resultset. To not retrieve deleted rows specify DELETED=YES. The terminology is a bit confusing here, a more appropriate keyword would have been IGNORE DELETED instead of DELETED.

Free Table directory

Driver={Microsoft Visual FoxPro Driver};SourceType=DBF;SourceDB=c:\myvfpdbfolder;Exclusive=No; Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;

Note that DELETED=NO will cause the driver to include deleted rows in the resultset. To not retrieve deleted rows specify DELETED=YES. The terminology is a bit confusing here, a more appropriate keyword would have been IGNORE DELETED instead of DELETED.

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8、Textfile
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ODBC

Standard

Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=c:\txtFilesFolder\;Extensions=asc,csv,tab,txt;

OLE DB

Delimited columns

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\txtFilesFolder\;Extended Properties="text;HDR=Yes;FMT=Delimited";

The delimiter can be specified in the registry at the following location:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Jet \ 4.0 \ Engines \ Text
"Format" = "TabDelimited"
or
"Format" = "Delimited(;)"

Fixed length columns

Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\txtFilesFolder\;Extended Properties="text;HDR=Yes;FMT=Fixed";

"HDR=Yes;" indicates that the first row contains columnnames, not data. "HDR=No;" indicates the opposite.
To specify each columns length use the Schema.ini file. See description below.
Important note!
The quota " in the string needs to be escaped using your language specific escape syntax.
c#, c++ \"
VB6, VBScript ""
xml (web.config etc) "
or maybe use a single quota '.

Schema.ini

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The schema information file tells the driver about the format of the text files. The file is always located in the same folder as the text files and must be named schema.ini.
[customers.txt]
Format=TabDelimited
ColNameHeader=True
MaxScanRows=0
CharacterSet=ANSI
[orders.txt]
Format=Delimited(;)
ColNameHeader=True
MaxScanRows=0
CharacterSet=ANSI
[invoices.txt]
Format=FixedLength
ColNameHeader=False
Col1=FieldName1 Integer Width 15
Col2=FieldName2 Date Width 15
Col3=FieldName3 Char Width 40
Col4=FieldName4 Float Width 20
CharacterSet=ANSI