Oracle has something like this, and I worked on this project when I was there. Although I was fascinated by the use cases, the adoption was pretty low in the relational world.
I don’t understand why the graph – relational crossover ecosystem doesn’t get more love like this – sometimes I want to explore a different paradigm on my data without installing a completely separate database and performing a migration. This is super cool!
- Installing a db these days is not prohibitive. You don't have to hire a DBA
curl | bash
- Some graph databases allow you to query a relational source without migrating data