Even if X10 does have backups, this is a prime example of why you should always keep a regular backup of all important work. If the database is that vital, you should not be trusting that X10 has a backup in place, you should be responsible for keeping your data safe.
Everyone has to learn to backup, and sadly for some it takes a loss to realise that.
Obviously, if X10 does have a backup, problem solved; but make sure you learn from this - backups are critical.