That is a tall order, shorter perhaps than writing an opengl driver

Vulkan is incredibly verbose and well documented, have you looked at the spec?

Unlike PostgreSQL, ScyllaDB is not as general-purpose and covers fewer use cases due to its query limitations. It doesn’t have the luxury of rich query capabilities found in PostgreSQL, such as joins, aggregates, subqueries, geospatial queries, and more. Additionally, ScyllaDB does not fully support ACID properties, making it less ideal in terms of consistency and data integrity

This is the most important part of the article imo