Last night I went to a NYC MySQL Group meetup entitled “Future of 21st Century Databases: CEO/CTO Discussion among Database Superstars“. Originally scheduled at AOL‘s offices, it was moved to AppNexus‘ headquarters due to overwhelming demand — it was packed with over 600 attendees (they expected 300). That speaks volumes about the growing interest in NoSQL (Not Only SQL) databases. The guest panel of the evening featured executives from 3 major NoSQL database vendors: Barry Morris of NuoDB, Bob Wiederhold of Couchbase, and Eliot Horowitz of MongoDB. There was little if any debate among them, as the focus seemed to be on the unique features of NoSQL as compared to traditional relational data stores.