Home : File Types : DSN File (2 File Associations)

.DSN File Extension

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File Type 1Database Source Name File

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Rare Uncommon Average Common Very Common
CategoryDatabase Files


This file is saved in a plain text format. You can open and view the contents of this file using a text editor.


File used by various database client programs to connect to a database; describes properties, such as the data source name and directory, the connection driver, the server address, user ID, and a password; used by ODBC drivers to connect to a specified database, such as a SQL Server or Microsoft Access database.

More Information

DSN files are typically stored in a plain text files. However, some client database programs use entries in the Windows registry instead of DSN files.

The ODBC Data Source Administrator included in Windows can be used to create DSN files. It can be found within the Windows Control Panel under Administrative Tools, or in the Start Menu by selecting Programs → Administrative Tools → Data Sources (ODBC).

Programs that open DSN files
Microsoft Windows LogoWindows
Microsoft ODBC Data Source Administrator
Mac OS X LogoMac
Apple ODBC Administrator
Updated 2/2/2010

File Type 2OrCAD Design File

DeveloperCadence Design Systems
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Rare Uncommon Average Common Very Common
CategoryCAD Files


This file is saved in a binary format, which requires a specific program to read its contents.


PCB (printed circuit board) design file created by OrCAD, a program used for designing PCBs; saves the circuit schematic and is often one of several files included in a OrCAD project (.OPJ file); references "symbols," which are the electronic components used to make up the design (stored in .OLB files).

Programs that open DSN files
Updated 10/25/2011