We have been taught, conditioned, trained to use SQL all our lives as engineers. It was there in schools, there when we went to college. It was being used at the company that we joined. It was such a common interview question that it no longer is. We don’t have just one, but an array of SQL databases to choose from. MySQL was released 22 years ago, in 1995 (youngest engineer at Dgraph was born the same year).