EDBT'04 - Session 8: Foundations of Query Processing Projection Pushing Revisited Benjamin J. McMahan Guoqiang Pan Patrick Porter Moshe Y. Vardi Processing Unions of Conjunctive Queries with Negation Under Limited Access Patterns Alan Nash Bertram Ludäscher XPath with Conditional Axis Relations Maarten Marx On Containment of Conjunctive Queries with Arithmatic Comparisons Foto N. Afrati Chen Li Prasenjit Mitra Return to EDBT'04 Sessions ©2005 Association for Computing Machinery