Did some fast and dirty refactoring (check later that everything's ok):
[emufront] / src / db /
drwxr-xr-x   ..
-rw-r--r-- 1760 databasemanager.cpp
-rw-r--r-- 683 databasemanager.h
-rw-r--r-- 3176 dbplatform.cpp
-rw-r--r-- 670 dbplatform.h