ODBC clients can use a configured data source name (DSN) for TDV to communicate with published TDV data services. A DSN can also be used to configure a 64-bit Windows client application to use either the TDV 64-bit or the TDV 32-bit ODBC driver.

Both 32-bit and 64-bit client applications can use the same System DSN to connect with TDV data services. However, if you configure a User DSN, the connection is available to only a single user on the local machine.