A term used to refer to a database or database server used as a source of data. ODBC data sources are referred to by their Data Source Name (DSN). Data sources can be created by using the Windows Control Panel or the RegisterDatabase or rdoRegisterDataSource method. .
a database that is registered with the ODBC driver
a named resource the application passes to the ODBC driver manager which tells it which ODBC driver to use and any connection attributes it should use