The real power of relational databases is: * it's fantastic for many kinds of queries you didn't have in mind when you created the data model * it's good enou

The real power of relational databases is: * it's fantastic for many kinds of queries you didn't have in mind when you created the data model * it's good enough for most use cases * it's been around long enough that safety and correctness features like transactions, foreign keys, UNIQUE and NOT NOLL constraints etc. are well implemented and understood. Any DB model that wants to challenge the ubiquity of RDBMS must address these points, and offer something on top. So far I haven't seen anything that would come close. Sure, there are lots of specialized use cases and specialized tools that are great in some areas (like geospatial data, graphs, time series, ...), but nothing that I'd use as a default choice for a project with vague requirements.