ASA Database Administration Guide
Connection and Communication Parameters
Connection parameters
The FileDataSourceName (FILEDSN) connection parameter tells the client library that there is an ODBC file data source holding information about the database to which you want to connect.
Both ODBC and Embedded SQL applications can use File data sources
Anywhere
String
There is no default name.
File data sources hold the same information as ODBC data sources stored in the registry. File data sources can be easily distributed to end users so that connection information does not have to be reconstructed on each machine.
DataSourceName connection parameter [DSN]