The daemon service is the process responsible for starting all HANA core process. HANA daemon starts all the process defined in daemon.ini.
On Hana Express, the command property given by daemon are:
/usr/sap/HXE/HDB00/hxehost/trace/hdb.sapHXE_HDB00 -d -nw -f /usr/sap/HXE/HDB00/hxehost/daemon.ini pf=/usr/sap/HXE/SYS/profile/HXE_HDB00_hxehost