Thanks for sharing! I really should have been more specific and said "SQL database engines". There's definitely a lot of interesting work going on in the docume

Thanks for sharing! I really should have been more specific and said "SQL database engines". There's definitely a lot of interesting work going on in the document store space, but as someone who's more familiar with SQL relational databases it's always a challenge to fit my data model into the constraints of document-based datastores. For example I'm used to being able to efficiently query on almost anything given that it's in an index, and services like DynamoDB and AppEngine Datastore (not sure if this is what Firebase Datastore is now) always seemed to want me to build my data around their unique constraints, making it difficult to move data between platforms. That's the real benefit of SQL databases: they're (largely) compatible with one another (as long as you're not using really niche features that is).