[Tizen Software Development] adfree:
sh-3.2# cd opt/dbspace
sh-3.2# ls -a -1 -l
total 9820
drwxr-xr-x 2 root app 4096 Dec 17 09:26 .
drwxr-xr-x 18 root root 4096 Dec 17 08:32 ..
-rw-rw---- 1 root db_alarm 24576 Apr 23 2016 .alarm.db
-rw-rw---- 1 root db_alarm 8720 Apr 23 2016 .alarm.db-journal
-rw-r--r-- 1 system system 12288 Dec 17 09:27 .alarmmgr.db
-rw-r--r-- 1 system system 512 Dec 17 08:31 .alarmmgr.db-journal
-rw-rw-r-- 1 root app 16384 Apr 23 2016 .appsvc.db
-rw-rw-r-- 1 root app 512 Apr 23 2016 .appsvc.db-journal
-rw-r--r-- 1 root app 28672 Dec 17 09:27 .badge.db
-rw-r--r-- 1 root app 16928 Dec 17 08:32 .badge.db-journal
-rw-rw---- 1 system system 225280 Dec 17 09:27 .dnet.db
-rw-rw-r-- 1 system system 29240 Dec 17 09:27 .dnet.db-journal
-rw-rw---- 1 system system 225280 Apr 23 2016 .dnet2.db
-rw-rw-r-- 1 system system 29240 Apr 23 2016 .dnet2.db-journal
-rw-rw---- 1 root app 16384 Apr 23 2016 .dsapps.db
-rw-rw---- 1 root app 512 Apr 23 2016 .dsapps.db-journal
-rw-rw-r-- 1 root app 16384 Dec 17 09:25 .emergency-home.db
-rw-rw-r-- 1 root app 16928 Dec 17 09:25 .emergency-home.db-journal
-rw-rw---- 1 root app 16384 Dec 17 08:31 .ime_info.db
-rw-rw---- 1 root app 12824 Dec 17 08:31 .ime_info.db-journal
-rw------- 1 system system 61440 Apr 23 2016 .mcc_mnc_oper_list.db
-rw-r--r-- 1 system system 16928 Apr 23 2016 .mcc_mnc_oper_list.db-journal
-rw------- 1 root root 57344 Dec 17 09:27 .mdm.db
-rw------- 1 root root 12824 Dec 17 08:32 .mdm.db-journal
-rw-r--r-- 1 root app 57344 Dec 17 09:29 .notification.db
-rw-r--r-- 1 root app 29240 Dec 17 09:29 .notification.db-journal
-rw-r--r-- 1 root root 57344 Dec 17 08:31 .pkgmgr_cert.db
-rw-r--r-- 1 root root 37448 Dec 17 08:31 .pkgmgr_cert.db-journal
-rw-rw-r-- 1 root root 1634304 Dec 17 09:26 .pkgmgr_parser.db
-rw-rw-r-- 1 root root 218024 Dec 17 09:26 .pkgmgr_parser.db-journal
-rw-rw-r-- 1 system system 28672 Dec 17 08:31 .privacy.db
-rw-rw-r-- 1 system system 12824 Dec 17 08:31 .privacy.db-journal
-rwxr-xr-x 1 system system 11264 Mar 12 2016 .privacylist.db
-rwxr-xr-x 1 root root 14336 Mar 12 2016 .privilegelist.db
-rw-rw---- 1 root app 28672 Dec 17 09:29 .rua.db
-rw-rw---- 1 root app 33344 Dec 17 09:29 .rua.db-journal
-rw-rw---- 1 root app 16384 Mar 12 2016 .rua_stat.db
-rw-rw---- 1 root app 512 Mar 12 2016 .rua_stat.db-journal
-rw-rw-r-- 1 root system 2850816 Dec 17 09:25 .rules-db.db3
-rw-rw-r-- 1 root system 2536784 Dec 17 09:25 .rules-db.db3-journal
-rw------- 1 root root 575689 Dec 17 09:26 .rules_file
-rw-rw-r-- 1 root system 40960 Dec 17 08:31 .sharedrule.db
-rw-rw-r-- 1 root system 16928 Dec 17 08:31 .sharedrule.db-journal
-rw-r----- 1 root app 24576 Apr 23 2016 .shortcut_service.db
-rw-r----- 1 root app 8720 Apr 23 2016 .shortcut_service.db-journal
-rw-r--r-- 1 root app 16384 Dec 17 09:26 .syspopup.db
-rw-r--r-- 1 root app 12824 Dec 17 09:26 .syspopup.db-journal
-rw-rw-r-- 1 root app 32768 Dec 17 09:27 .wallpaper_list.db
-rw-rw-r-- 1 root app 16928 Dec 17 09:26 .wallpaper_list.db-journal
-rw-r----- 1 system app 90112 Apr 23 2016 .widget.db
-rw-r----- 1 system app 45656 Apr 23 2016 .widget.db-journal
-rw-rw---- 1 root root 20480 Apr 23 2016 .wifi_offload.db
-rw-rw-r-- 1 root root 8720 Apr 23 2016 .wifi_offload.db-journal
-rw-rw---- 1 root db_worldclock 16928 Apr 23 2016 .worldclock.db-journal
-rw-rw---- 1 root app 266240 Dec 17 08:31 .wrt.db
-rw-rw---- 1 root app 107216 Dec 17 08:31 .wrt.db-journal

SQL3 database stuff...

In Firmware file rootfs.img for instance in opt.zip...

Also interesting XML files in:

usr/share/packages

I "need" to remove few apps... complete disable... as they are preinstalled in database... pkgmgr_parser.db

Best Regards

Edit 1...

I mean the "Desktop" files...

/usr/share/applications/

For instance:

Type=Application
Exec=/usr/apps/com.samsung.weather-m/bin/weather-m-widget
Version=1.2.18
NoDisplay=true
X-TIZEN-TaskManage=False
Hw-Acceleration=default
[B][COLOR="Red"]X-TIZEN-Removable=False[/COLOR][/B]
X-TIZEN-PackageType=tpk
X-TIZEN-PkgID=com.samsung.weather-m
X-TIZEN-InstalledStorage=installed_internal