There's also https://www.torodb.com/stampede/docs/1.0.0-beta3/relational-schema/ https://www.torodb.com/stampede/docs/1.0.0-beta3/relational-... which tails the

There's also https://www.torodb.com/stampede/docs/1.0.0-beta3/relational-schema/ https://www.torodb.com/stampede/docs/1.0.0-beta3/relational-... which tails the Mongo oplog and makes a fully-relational read replica, adding columns and indices as needed. An amazing (and free) shortcut to using analytics tools if Mongo's your main datasource.