I'd down vote this if I could... It's far from the correct title. A good part of the optimisation of all modern analysis DBs is in-memory... this is no differ

I'd down vote this if I could... It's far from the correct title. A good part of the optimisation of all modern analysis DBs is in-memory... this is no different and as such he's compared his work against 2 of the major other systems in the space. I see a lot of critics here... I think the guy should be congratulated for his work - which if you've read through all pages, appears to be done single handed!