You write standard MySQL or PostgreSQL code on one side, and a live entity-relationship diagram renders it on the other—kept in sync as you type. No proprietary syntax, no manual drawing. The diagram is just another view of your code.
Oftentimes, diagrams become bloated and it's difficult to use the visual. A different approach was implemented this time: a user enters the Brainstorm mode and is isolated from all tables except for the target table and all relational tables connected to it.