Is Your RDBMS Reliable?

The reliability of an RDBMS is not just one or two points, it's all of them. So in short, does the thing actually work even when some minor things go wrong? It would be interesting though, because depending on if you were maybe Google scale, Amazon scale, Facebook scale, you might have additional metrics in there about like you know, page load time. You can kind of like at a very fine-grained level, grade yourself and give yourself a very accurate rating for how you're doing with all this stuff.