Surely just quicker to download to your desktop straight from cPanel? unless you have a load of db's to backup each day.
You can try this open source script: http://sourceforge.net/projects/automysqlbackup/ Info: http://members.lycos.co.uk/wipe_out/automysqlbackup/ .SR
I could propose an open source tool that could do a daily backup. If you have a mysql database, you need to get Talend open studio. When you have set up the connection between mysql and your computer, you are able to reopen it the next day and run the program to extract directly the data from your mysql database. You might even be able to automate the tasks with open studio (I am not sure about that).