System interoperability is a well known issue, especially for heterogeneous information systems, where ontologybased representations may support automatic and usertransparent inte...
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
In this paper, we wish to build a high quality database of
images depicting scenes, along with their real-world threedimensional
(3D) coordinates. Such a database is useful
for ...
Appropriately selected materialized views (also called indexed views) can speed up query execution by orders of magnitude. Most database systems limit support for materialized vie...
An extended abstract of this paper appeared in Proceedings of the 15th ACM SIGACT-SIGMODSIGART Symposium on Principles of Database Systems [1]. 2 E-mail: pankaÄcs.duke.edu; httpÂ...
Pankaj K. Agarwal, Lars Arge, Jeff Erickson, Paolo...