[RadiozRadioz]

GP didn't ask about references. They asked what the tool actually was, and asked about the types of guarantees it provides compared to a known RDBMS.

[nichenqin]

I got it. And in my opinion the most value undb provide is to handle the reference part which you always have to impl in code when you use traditional RDBMS. Also it provides typed api, real-time sub and user friendly views

[lopkeny12ko]

...You're still not answering the question. What are the ACID properties? Why is SQL, a standard for database query languages, not supported?

[nichenqin]

It supports, but just hard to write for people don't know sql

[titanomachy]

By “reference” you mean like foreign key reference? Joins?