Well, Oracle is more prevalent in big enterprise. But if you look at the equations at the end of the article, a mysql/postgres DBA costs probably 80-90% of the

Well, Oracle is more prevalent in big enterprise. But if you look at the equations at the end of the article, a mysql/postgres DBA costs probably 80-90% of the Oracle DBA. The licensing costs are less, but the hardware cost for the big-iron and big-SAN to run the RDBMS is pretty much the same.