MySQL

Does the wiki support MySQL databases for storing wiki content?

MySQL is the most popular database for open source web applications. It is free and open source itself. It is also widely available on many web hosting services. The PHP language has always integrated well with MySQL, and so the two often go hand-in-hand, and a very popular web-application platform on linux and windows.

Install mysql on your webserver, or check if your web host provides you with MySQL databases before attempting to install such a wiki. You may prefer a wiki which uses Text Files for storage (although many web hosts do not allow file writing operations, so you must also check this)