oh no those recommendations for smb space. 5-100 employees 5-500 million revenue.
sage makes a lower end product i know its popular in UK i think its sage 50.
for single user its easier to use a simple database (non-sql) as its alot easier to move around and backup.
sql based solutions have quite a bit more complexity to manage, log files, vss-aware backups, shutting down and starting up properly.
not to say a file based database isn't as fragile; its just hella easier to restore When you need to.