How to Run Your Own Business With A Help Of Drupal
But you can make any website using such wonderful CMS as Drupal.
And if you have a team of really good PHP programmers you can get good profit out of your fortune.
Of course knowledge of MySQL database is a must. But every PHP programmer knows MySQL, because it is a part of PHP programmer profession.
It is really hard to imagine any website on PHP without MySQL database or PostgreSQL database which is very similar to MySQL.
Lots of companies which deal with Drupal earn huge money, because such a work costs lots of money.
And you can make lots of money in no time.