The QlikView Business Discovery platform delivers true self-service business intelligence that empowers business users and drives innovative decision making
DB-SVG is a java web application that generates SVG data model diagrams for any database with a JDBC driver. Database connections are configured via an XML file. The interactive interface allows tables to be dragged around and their positions saved. It is designed to make internal database coordination and documentation easy and accessible. See the demo to understand how it works.
Atlantis Data Surf is a free animated SQL Database Visualization Tool which allows you to easily visualise complex schemas - use it to 'surf' through your data.