A slightly more plausible example is “Who knows John?”. I think about turning to triple stores when I’m still exploring an application domain and don’t know wh

A slightly more plausible example is “Who knows John?”. I think about turning to triple stores when I’m still exploring an application domain and don’t know what data access patterns will look like yet. Something like a hexastore that maintains full indexes for all query orders seems like a reasonable compromise for read-heavy applications in the prototype stage.