Given an OLAP query expressed over multiple source OLAP databases, we study the problem of estimating the resulting OLAP target database. The problem...
Node-selecting queries over trees lie at the core of several important XML languages for the web, such as the node-selection language XPath, the query...
Composition of mappings between schemas is essential to support schema evolution, data exchange, data integration, and other data management tasks. In...
This article studies optimizing top-k queries in middlewares. While many assorted algorithms have been proposed, none is generally applicable to a wid...
A variety of techniques for performing a spatial join are reviewed. Instead of just summarizing the literature and presenting each technique in its en...
