Its a complex relationship b/w file system, database system and Big data systems. One need to understand that if he wanna get complete info about CATA. CATA project is solving the problem of data center storage through its multi core engines.
Honestly I don't think this is something new. That's why the team is also shy in rolling out details of the project. There are scores of such projects already floating in the market. You can see and explore filecoin for instance.