Frappe Books uses a local file on your computer as its database
Select database file
When you open Frappe Books for the first time, you are presented with the following screen:
Click on New File if you are using Frappe Books for the first time. Select a location where you want to save the file, choose a name for your file and click Save.
Click on Existing File if you have a backup file of Frappe Books already. After selecting the file, Frappe Books will load the company information and transactions from it.