MySQL Connector/ODBC Developer Guide

5.1 Overview of Connector/ODBC Data Source Names

A Data Source Name associates the configuration parameters for communicating with a specific database. Generally, a DSN consists of the following parameters:

In addition, different ODBC drivers, including Connector/ODBC, may accept additional driver-specific options and parameters.

There are three types of DSN:

DSN information is stored in different locations depending on your platform and environment.