The first question my hosting manager / databases / MySQL asks me i whether or not I want to enable DSN.
I can't seem to find mention of DSN in the Codex; in particular, it does not seem to be mentioned in the installation guide. My Hosting Manager does have pop-up help for this choice; unfortunately, all it says is "Select this option to create, recreate, or remove a DSN for this database."
Google reveals that "Data Source Name provides connectivity to a database through an ODBC driver." I can't find ODBC in the WordPress Codex either, and some posts indicate this is not a WordPress problem.
Can anyone suggest what choice to make?