ericP: ericP presumptuously tells database experts how to optimize their DBs
bitsko: linked here because this "API" proposal puts less emphasis on a newly created format and more emphasis on existing formats, thus reducing Atom's conflict with RDF and enabling Atom to "grow into" RDF as RDF support in and alongside existing formats matures.
ericP: example of an RDF query that is much simpler than the equivilent SQL query