Tim Peterson is a data warehousing consultant, seminar leader, and database designer with his company, SDG Computing, Inc. He is a MCSD, a MCSE, a MCT, and an associate member of the Data Warehousing Institute. Visit his web site at sdgcomputing.com. Jim Pinkelman, PhD, is VP of Technology and consultant for Geppetto's Workshop, specializing in relational and multi-dimensional databases. He teaches Management Sciences part-time at Loyola University in Chicago. Russell Darroch, PhD, is a MCSE, a MCT, and a MCP and owns a consulting firm in Australia, Accord IT Solutions, which specializes in relational and multidimensional databases. He is also Senior Instructor with Microsoft Australia. Visit his web site at accord-it.com.au.