Not just for building a new one, it can also complement existing data-warehouse/lakehouses: https://github.com/buremba/universql https://github.com/buremba/univ

Not just for building a new one, it can also complement existing data-warehouse/lakehouses: https://github.com/buremba/universql https://github.com/buremba/universql The flight extension is excellent as it removes the need to write C++ extensions and lets you use your favorite language to develop native DuckDB catalogs. It's straightforward to build data lake connectors and plug them in as a flight catalog, thanks to Airport!