ODBC initialization information is located in the HKEY_CURRENT_USER\SOFTWARE\ODBC\ODBC.INI registry key. When you define a data source for a particular ODBC driver, the driver writes the values you specify in the ODBC setup dialog box to the ODBC.INI registry key.
The ODBC.INI key contains subkeys named for each defined data source. Each subkey contains the values specified for that data source in the ODBC setup dialog box. The values might vary for each data source but generally include the following:
Database
Driver
Optional description
DBMS-specific connection parameters
Do not edit the ODBC subkey directly to modify connection information. Instead, use a tool designed to define ODBC data sources and the ODBC configuration automatically, such as the ODBC Data Source Administrator.
