Frequency of Ninox automated backups?

How often are Ninox automated backups supposed to take place? What triggers them?

Automated Backups are triggered by changes to the database. They will be available 1hm 2h, 4h, 8h, 18h,... back. Up to 12 backups are available.
Birger

Are they triggered by changes to the database structure or changes to the database data?

Its changes to the data. - Note that you can create a manual backup any time.
Birger