Question/Topic: How to backup database files?
Warning: do not select backup all databases if you are not sure how this function works. See: Backup All Databases
Backup procedure creates an exact copy of your data files with all related files (data layout fields, drop-down boxes content, ..).
If you restore database from the backup file you can restore it to the original database or to a new database.
Backup procedure is the best if you would like to move/transfer database from one computer to another.
Related Topics ...
Could I backup all my databases in one backup procedure?