This guide explains how to export the content of a MySQL database on SQL format.
Note: If the database is too big using phpMyAdmin could cause some issues, in that case try to export using the command line.
1 - Access your Hosting Panel
Just follow instruccions of How to access your Hosting Panel.
2 - Click on phpMyAdmin
Look for and click on phpMyAdmin icon.
3 - Select your database
Once you are inside phpMyAdmin look for the database on the left column and click on it's name.
4 - Access Export menu
Just click on Export tab.
5 - Submit the form
Just submit the form using the default values as they are usually good enough:
A SQL dump will be done and your browser will start to download it.