Multiple WordPress Installation Using a Single Database
In this article, I am going to show you how to install multiple WordPress websites or blogs using one database. Well, this is very simple and quick to do it. Sometimes more than one WordPress installations are required and your hosting server is limited to one MySQL database.
Watch this video tutorial
During the installation you have to change the table prefix by editing the wp-config.php file, you need to change the prefix “wp_” to allow multiple WordPress installations. So you can use for main website wpluis_ and for the next one wpdanny_ you can use the different prefix and this way you can create as many installations as you want.
Examples are given below
$table_prefix = 'wpluis_';
$table_prefix = 'wpdanny_';
Video Source: wordpress.tv