phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web. Currently it can create and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields, manage privileges,export data into various formats and is available in 55 languages.
Download phpMyAdmin from the site at:
Install into your Sites folder (Users/yourusername/Sites).
You need to create a file named config.inc.php. Use config.sample.inc.php as an example.
Access it via http://127.0.0.1/~yourusername/phpMyAdmin/index.php.