Look lik at the moment Exact DB beckend routines are well isolated and effectively only in three places are exact DB beckenf specyfic rotines
- open database (+ DB upgrade + reading exact DB backend configuration)
- close database
- execute DB query
With that IMO it would be good to move exact DB backend support to loadable module.
This would allow produce universal server and proxy executables + set of DSOs with exact database backend support.