Expert answer:
Hello, if you want to back up data, you can click the "System Settings" drop-down menu "Database Backup", select the backup path, click "Save" to return to the database interface, click "Backup" and then "Exit".
"Database Recovery" in the "System Settings" drop-down menu, click "Database Recovery", select to open the database file to be restored, return to the restore database interface, click "Restore Database", a confirmation interface pops up, click "Yes", and finally click "determine".
For detailed operation method, please refer to the content of "Access Control Video" recorded by our company, thank you!