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Rick F. van der Lans is an independent consultant, author and lecturer specializing in database technology, development tools, and data warehousing. He is managing director of R20/Consultancy based in The Netherlands. Rick has advised many large companies worldwide on defining their IT architectures. He is chairman of the Software Automation Expo, columnist for CM Corporate and editor for Database Magazine and Software Release Magazine. For 6 years he has been a member of the Dutch committee responsible for developing the international ISO standard for SQL. He is the author of several books, including the three previous editions of this book.