In order to backup your CubeCart application you have to:
Step 1 Backup all your files
Backup all of your files and folders inside your CubeCart installation. Please, click here to learn how to create a backup of your files and folders
Step 2 Backup/Export your database
Then, you have to export your CubeCart database. You can do that by using PHPMyAdmin. Find out how to reach the PHPMyAdmin here.
Once you've reached the phpMyAdmin tool, please find out how to backup/restore your MySQL database.
Once you have the CubeCart installation files and the database exported on your hard drive, you have your CubeCart backed up! Congratulations!