Backup Database From the Command Prompt
It is a
good idea to backup your MySQL data occasionally as a precautionary
measure. It is also a good idea to create a backup before making any
major changes, incase something goes wrong and you need to revert to
the unmodified version. Database backups can also be used to transfer
your database from one server to another if you change web hosts.
From a command prompt, you can backup your entire database using this line:
mysqldump -u user_name -p your_password database_name > File_name.sql