Not so the work of Mark Suppes, a New York web designer for fashion house Gucci who surprised his neighbors in June of 2010 by revealing he had built a nuclear reactor in a Brooklyn warehouse.

By day, Mark Suppes is a web developer for fashion giant Gucci. By night, he cycles to a New York warehouse and tinkers with his own nuclear fusion reactor.

With only 5% of today's data warehouse projects targeted for mainframes, data marts are indeed a case of "workgroups hitting the mark."