DBMonster is a tool which generates random test data and puts it into SQL database. It helps to test how an application can deal with large database.
I found this project GOOD for my application test data generation. I generated test data for almost 294 tables and upto 5000 rows in major tables. It took almost a week but tool helps a lot.
Nice project. I've had some issues while generating large schemas, but it's still quite useful.