With equivalent OS interaction, and no JOINs/seeks, the RDBMS could actually be faster, as there is no overhead of storing the name of every col in every record

With equivalent OS interaction, and no JOINs/seeks, the RDBMS could actually be faster, as there is no overhead of storing the name of every col in every record. I still like MongoDB though. During dev it's nice to not have to worry so much about schema, run ALTER, etc.