Are Relational Databases Obsolete?

jpkunst writes: Computerworld reports that Michael Stonebraker, who co-created the Ingres and Postgres technology as a researcher at UC Berkeley in the early 1970s, argues in The Database Column that the current major relational DBMSs (DB2, SQLserver, Oracle) "should be considered legacy technology, more than a quarter of century in age and 'long in the tooth'.". His prediction is "that column stores will take over the warehouse market over time, completely displacing row stores".