MACROMEDIA COLDFUSION 5-ADVANCED ADMINISTRATION, Руководство пользователя

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12 Chapter 1 Advanced Data Source Management
Using Connection String Options
ColdFusion 5 allows you to specify a connection string for ODBC data sources. You
can do this programmatically or in the ColdFusion Administrator.
About the connection string
You can use the connection string to do the following tasks:
•
Specify connection attributes that cannot be defined in the odbc.ini settings.
•
Override odbc.ini settings.
•
Make ODBC connections dynamically when there is no data source defined in
the odbc.ini settings.
Some ODBC data sources let you pass driver-specific options. A database
administrator (DBA) can use these options to see which applications are connected
to the database server, and to identify who is running those applications. For
example, many applications that connect to Microsoft SQL Server pass the
attribue-value pairs APP="appname" and WSID="work station id" when connecting.
Consider the following
cfquery
, which specifies values in the connection string for
the APP and WSID attributes
:
<cfquery
name="getInfo" datasource="2Northwind" dbtype="ODBC"
connectstring="DRIVER={SQL SERVER};
SERVER=(local); UID=sa; PWD=;
DATABASE=Northwind;
APP=ColdFusion5;WSID=Workstation_Moe"
>
SELECT *
FROM shippers
</cfquery>
The APP and WSID values are readily available when you run the above query. A SQL
Server DBA can use Profiler to view this information in a trace: