I hate it. I hate it. I hate it. I hate that answer. "just get a database." Not you! I hate it because it IS the right answer. It's ALWAYS the right answer (for sufficient values of "always".) But it's a near firing offence if I do it as a skunkworks project and they won't allocate it willingly. Even if I were to add "nonclashing table names" into a currently unused dev database I'd get shot. It's the kind of illogic that causes stress fractures to develop in my skull as the steam escapes.
Corion said the same thing re: map reduce. I've heard of it. But I know nothing about it as it seems always to be accompanied with that pie-eyed silver-bullet attitude I've become alergic to.Perhaps it's time to give it a serious look see.