Combining Hierarchy Encoding and Pre-Grouping: Intelligent Grouping in Star Join Processing Roland Pieringer, Klaus Elhardt, Frank Ramsak, Volker Markl, Robert Fenk, Robert Bayer, Nikos Karayannidis, Aris Tsois, and Timos K. Sellis   View Paper (PDF)   Return to Research Session 9: Query/Transaction Processing and Optimization ©2004 Association for Computing Machinery