Effect of parameter | -reset-database // -reset-deltas

It is also strange for me, I can rename, move, delete the directory /var/packages/syncthing/target/var/index-v0.14.0.db/. Syncthing still work as if it were nothing after starting, but the directory will not be recreated and to create the database again. Maybe I waited too short, because it was not plausibel for me.

I would like clarification on how to reset the database manually. Should I just delete the contents of the /var/packages/syncthing/target/var/index-v0.14.0.db/ directory?