Download: WP PhpMyAdmin for WPMU

This plugin is for you who want to manage your database inside WPMU. The plugin will install phpMyAdmin inside your WPMU install, and it’s a rather large plugin.

Install: Unzip and upload everything to wp-content/mu-plugins/

The plugin is a mod of WordPress phpMyAdmin

Alternative download: WPMUDEV.ORG: WP PhpMyAdmin for WPMU