TheInternationalConferenceonScienti?candStatisticalDatabaseManagement (SSDBM)isanestablishedforumfortheexchangeofthelatestresearchresultson concepts, tools, andtechniquesforscienti?candstatisticaldatabaseapplications. The2008meetingmarkedthe20thtimethatscienti?cdomainexperts, databases researchers, practitioners, and developers came together to share their new - sightsand to discuss ina stimulating environmentfuture researchdirections. This volume contains the proceedings of the 20th SSDBM Conference, held in Hong Kong, China, July 9-11,2008.The conference included 3 keynote talks, 28 long...