Starting with MediaWiki 1.2.0, it's possible to install
and configure the wiki "in-place", as long as you have
-the necessary prerequesites available.
+the necessary prerequisites available.
Required software:
* Web server with PHP 5.x or higher.
-* A MySQL server, 4.0.14 or higher.
+* A MySQL server, 4.0.14 or higher OR a Postgres server, 8.1 or higher
MediaWiki is developed and tested mainly on Unix/Linux
platforms, but should work on Windows as well.