Because performance is a crucial issue in database systems, data caching techniques have been studied in database research field, especially in client-server databases and distrib...
We provide several new sampling-based estimators of the number of distinct values of an attribute in a relation. We compare these new estimators to estimators from the database an...
Peter J. Haas, Jeffrey F. Naughton, S. Seshadri, L...
This article explains challenges that arise when humanitarian organizations want to coordinate their development activities by means of distributed information systems. It focuses...
Database selection is an important step when searching over large numbers of distributed text databases. The database selection task relies on statistical summaries of the databas...
Dynamic data streams are those whose underlying distribution changes over time. They occur in a number of application domains, and mining them is important for these applications....