MattCA

If you want to give them direct access to database use phpMyAdmin, it's written in PHP.
There are also other database managing scripts you can use, but the one I mentioned is the most popular across the net.

ap2010

You will need someone to create server-side script that displays data from the database, an optionally, allows them to add, edit, delete or export the data. PHP is an ideal scripting language for this purpose.

Hosting companies also provide a database manager (such as phpMyAdmin) for you to manage the database yourself. But you will never want to allow other people to use that.

after_me

Direct Access to PhpMyAdmin is not good idea.
Much better if you just export data into XML

imsas

Just create and HTML form that uses PHP to access the specific MySQL database.. Then retrieve the data using the SELECT command..