I have how do they fit in our technology stack and so on so kind of a lot of good in was moved into put what developers from theone-size-fits-all I paradigm after Paul store you have to choose and its political process and no secrets much about choice but you have to have consciously choose with the knowledge that you have which databases you want to use to book your application best way possible and that's why all its toughest a I’ll all of them have different if you look at me added two major dimensions purchased size and complexity are then we can see that a all the aggregate all based data bases like you are your source column stores and document databases which for three three chapters kind of concept aka get a chance chargeable but atomically in its own at the deal love high volumes have some problems dealing with connected a doubt so it's really hard to cross-reference information an aggregate into.