[anonetal]

OrientDB is a good open-source database that exposes a primarily object data model (the document and graph abstractions are built on top of it).

Lack of a good query language and scalability issues doomed those. Mike Stonebraker (https://blog.grakn.ai/what-goes-around-comes-around-52d38ee1...) had a nice summary in that article.

[ken]

There are 4 reasons proposed for the failure of OODBs, in that paper, but scalability is not among them.

Interestingly, the issues are largely C++-specific (and I know lots of people using an ORM today but none via C++), and largely driven by historical accident and market forces ("It is interesting to conjecture about the marketplace chances of O2 if they had started initially in the USA with sophisticated US venture capital backing").

I still don't think these sound like good reasons to dismiss the architecture.

[lvca]

I agree that a pure ODBMS makes no much sense today, but OrientDB is a Multi-Model where the Object Model is one of the supported models. You can mix objects, graphs, schema-less documents and much more + using SQL as the query language. Boom!

(Disclaimer: I am the founder of OrientDB)