The Form Data Browser lets you view and edit data that has been saved by form submissions that include the Database Save Action field.
The forms used to interact with saved data are organised into the same groups used in the Forms Library. Saved data is grouped by year, month and day (and sometimes hours and minutes if there's lots of data) beneath each form.
Saving form data using this method is only one way to store data in the platform. Most products use the platform's History Service .