Hi Stackers, I'm interested in openstack nova design and architecture to extend, improvement openstack. I wanted to know about openstack in deep, so I searched openstack database schema. And I found it. http://wiki.openstack.org/NovaDatabaseSchema But, it looks out of date to recent trunk. I'm start to create new data model document on according to trunk. Please share following https://docs.google.com/spreadsheet/ccc?key=0AsUHVTZg__ridEE3cjdrTWZaRGxtSXd0dVRUT0ZsdlE&hl=en_US#gid=0 I'm unfamiliar about new features, Quantum and Virtual Server Array and so on. Maybe I have a misunderstanding about these. Best Regards Takahiro Shida