data source name (ODBC) (DSN)
The Data Source Name(DSN) is a structured record with information about a specific database.
Drivers need the DSN record to get access to the database and the corresponding record. The DSN structure depends on the abstraction layer framework. It resides in the registry and contains information about the name and directory and the identification of the user. The connection to the database is established through the Relational Database Management System( RDBMS).