David Haertzen is the author of The Analytical Puzzle: Profitable Data Warehousing, Business Intelligence and Analytics. In addition, he contributes to industry publications and blogs. David is an acknowledged trail blazer and thinker in the fields of data warehousing, business intelligence and analytics. He has aided a diverse set of organizations from start-ups to multinationals to utilize data for their advantage. David is known for his engaging teaching and speaking style (look out for challenging ideas!) and is a sought after presenter at industry conferences and events. David is a graduate of the University of Minnesota and holds an MBA from the University of St. Thomas.