The market demand for database work is primarily not in making mid-size databases work better, but in making the "mid-size database" abstraction work on increas

The market demand for database work is primarily not in making mid-size databases work better, but in making the "mid-size database" abstraction work on increasingly large (and increasingly distributed) datasets. I'm familiar with large companies who routinely run SQL queries over ~all their logs; a decade ago that would have been somewhere between extremely challenging and impossible.