dbengines

001 => complete ranking

002 => content stores

003 => document stores

004 => event stores

005 => graph dbms

006 => key-value stores

007 => multivalue dbms

008 => native xml dbms

009 => navigational dbms

010 => object oriented dbms

011 => rdf stores

012 => relational dbms

013 => search engines

014 => time series dbms

015 => wide column stores