I recently created my first site using MySQL as the back end. Having phpMyAdmin was very handy. This full featured php-based tool lets you administer MySQL databases from your browser. -Add/mod/delete records. -Add/mod/delete tables, fields. -Run SQL statements. -Export data to text files. I'm used to using MS Access for the web (yes I know, it has its limitations), and it was nice to switch to MySQL with the help of this tool. It would be nice if it had reporting features, ran faster, and let you create a table relationship diagram. But its a great products as it is, and you can't beat the price.
Related link: phpMyAdmin