It's hard to make reports from NoSQL databases, and this is true for some SQL databases as well. And what if your reports need data from several databases? Then you need a separate reporting database. This talk will give you an introduction to reporting databases - what they are, when to use them, how to design them, and a quick look at some of the tools available. Lastly we'll look at how we implemented reporting databases at Shoobx and some of our experiences there.