Hans-Jurgen Schonig and his company Cybertec Schonig & Schonig GmbH (www.postgresql-support.de) have been in professional PostgreSQL service, support, and consulting for over 15 years. He has written several books on PostgreSQL and has serviced customers around the globe. In his daily work, he focuses on performance optimization, PostgreSQL support, and training, as well as, on scalable solutions based on PostgreSQL. He likes working on complex PostgreSQL problems—especially on large-scale systems and analytical problems. When he is not visiting customers, he is based in Wiener Neustadt, Austria.