Data Warehousing Lessons Learned

Legacy Databases Take a Dive and ..

"MySQL and PostgreSQL - open source database management systems (DBMSs) - are now on the radar, registering a combined total of just less than 2%."

http://www.dmreview.com/article_sub.cfm?articleId=1023914

yah they are small now and growing fast

ps: on wikipedia what is Data WareHousing