Data warehousing is a booming industry with many interesting research problems. The
database research community has concentrated on only a few aspects. In this paper, We …

Database Management Systems provides comprehensive and up-to-date coverage of the
fundamentals of database systems. Coherent explanations and practical examples have …

Materialized views are queries whose results are stored and maintained in order to facilitate
access to data in their underlying base tables. In the SQL setting, they are now considered a …

Modern database management systems essentially solve the problem of accessing and
managing large volumes of related data on a single platform, or on a cluster of tightly …

Currently, users of geo-distributed storage systems face a hard choice between having
serializable transactions with high latency, or limited or no transactions with low latency. We …

Data warehouses contain large amounts of information, often collected from a variety of
independent sources. Decision-support functions in a warehouse, such as on-line analytical …

Materialized views have been found to be very effective at speeding up queries, and are
increasingly being supported by commercial databases and data warehouse systems …

We present incremental view maintenance algorithms for a data warehouse derived from
multiple distributed autonomous data sources. We begin with a detailed framework for …

An information retrieval (IR) engine can rank documents based on textual proximity of
keywords within each document. In this paper we apply this notion to search across an …

Databases and related information systems can benefit from the use of ontologies to enrich
the data with general background knowledge. The DL-Lite family of ontology languages was …