This line in particular is a head-scratcher: > Advanced inter-document relations and analysis. No JOINs. No pain. […] queries allow for multi-table, multi-dep

This line in particular is a head-scratcher: > Advanced inter-document relations and analysis. No JOINs. No pain. […] queries allow for multi-table, multi-depth document retrieval, efficiently in the database, without the use of complicated JOINs That sounds like they have a networked database, not a relational database. That might be fine, but as I understand it, relational databases won because they offer more flexible access patterns and it’s easier to write correct queries.