To facilitate queries over semi-structured data, various structural summaries have been proposed. Structural summaries are derived directly from the data and serve as indices for ...
Data Warehousing and OLAPapplications typically view data as having multiple logical dimensions e.g., product, location with natural hierarchies de ned on each dimension. OLAP que...
Continuous queries in a Data Stream Management System (DSMS) rely on time as a basis for windows on streams and for defining a consistent semantics for multiple streams and updata...
In this paper, we propose a novel client-side, multi-granularity caching scheme, called "Complementary Space Caching" (CS caching), for location-based services in mobile ...
Ken C. K. Lee, Wang-Chien Lee, Baihua Zheng, Jianl...
We address the problem of generating a mediated schema from a set of relational data source schemas and conjunctive queries that specify where those schemas overlap. Unlike past a...