MySQL Workbench

MySQL Workbench is a GUI for database development. Perhaps it's a better tool when teaching databases than the PhpMyAdmin.

MySQL Workbench

The workflow could be:

1. Pen & paper for the first drafts (alternative: Dia, if you want something on a screen).
2. ER-D and database development in MySQL Workbench
3. Implement the database in PHP via MySQLi.
4. Visualize the data in creative UX solutions ...