An exciting debate on "SQL vs NoSQL".
Helgi Þorbjörnsson
Helgi is an Icelander transplanted in Ireland, working as the VP of Engineering and partner at Echolibre, an Irish company that prides it self of helping startups realise their dreams.
In his spare time Helgi is a PEAR extraordinaire, author, lecturer and passionate about anything performance related. Currently all his attention is divided between the PEAR installer, Pyrus and FRAPI.
Helgi frequently gives talks at various PHP and Web conferences around the world as well as writing articles for print and web magazines alike.
Johannes Schlüter
Johannes Schlüter is involved with the PHP community for more than 10 years. As an active contributor to the PHP project he is serving as Release Manager for the PHP 5.3 series. Working on PHP is also part of his job at Oracle's MySQL Engineering team where he is an engineer in the MySQL Connectors and Client Connectivity group. He's blogs regularly and lives in Munich, Germany.
Derick Rethans
Derick Rethans has contributed in a number of ways to the PHP project, including the Xdebug debugging tool, the mcrypt, date and input-filter extensions, bug fixes, additions and leading the QA team. He's a frequent lecturer at conferences, the author of php|architect's Guide to Date and Time Programming, and the co-author of PHP 5 Power Programming. Derick works as an independent contractor doing various PHP related jobs while focussing on internals and extensions. In his spare time he likes to travel, hike, ski and practise photography.
Dave Stokes
MySQL Community Manager at Oracle. I have been using Open Source databases for many years and actually worked for MySQL AB before it was purchased by Sun and eventually Oracle. I have used just about all the open source DBs including Postgres, MySQL, MongoDB, and more key/pair stores than I want to count. My background is using open source software in underfunded projects for companies ranging from the American Heart Association to Xerox.