Magento: backup options

Question

I have a question regarding the Magento options found under:

Admin Panel -> System -> Tools -> Backups

What is the difference between "System Backup", "Database and Media Backup", and "Database Backup".

I think I can figure out the difference between 2 and 3, 2 being that the files from uploaded images and similar uploaded content which is not stored in the database is also backed up, but what could be the difference betweeen 1 and 2?

Answer 1

1. System Backup will create a .tgz of the entire source code and the database
2. Database and Media Backup will create a .tgz containing a database backup and the contents of the media directory
3. Database Backup will backup only the database