I haven't really understood: it generates code for your REST API based on db schema, or it is an app which magically turns urls into db requests by itself? I d

I haven't really understood: it generates code for your REST API based on db schema, or it is an app which magically turns urls into db requests by itself? I don't really see any reason whatsoever to use the latter if I can use the former instead. It's simple and scalable approach, unlike relying on the lib would "do everything just right".