Implementing a scalable XML publish/subscribe system using relational database systemsFeng TianBerthold Reinwaldet al.2004SIGMOD 2004
Robust query processing through progressive optimizationVolker MarklVijayshankar Ramanet al.2004SIGMOD 2004
Enabling sovereign information sharing using web servicesRakesh AgrawalDmitri Asonovet al.2004SIGMOD 2004