Someone posted about one of their projects here the other day, Akiban [0]. While not exactly the same it was also bridging the SQL/NoSQL worlds. Not 100% sure on how it works but it has table-groups to let you pre join collections together (I think).
Someone posted about one of their projects here the other day, Akiban [0]. While not exactly the same it was also bridging the SQL/NoSQL worlds. Not 100% sure on how it works but it has table-groups to let you pre join collections together (I think).
[0] http://www.akiban.com/