I don’t know when this began, but I just happened to see Task Manager on a server running QuickBooks, and it is very clearly running “SQL Anywhere Network Server (32 bit)”, which is some version of Sybase SQL Anywhere:
http://infocenter.sybase.com/help/topic/com.sybase.help.sqlanywhere.12.0.1/dbadmin/da-running.html
The last time I checked this, which was a while ago, it looked like a much more hidden version of Pervasive SQL. This may be a major change at the heart of QuickBooks, hopefully for the better. One does wonder if we could use those command-line options to advantage…