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BNCOD
2009
13 years 11 months ago
2009
We study the expressiveness of a positive fragment of path queries, denoted Path+ , on node-labeled trees documents. The expressiveness of Path+ is studied from two angles. First, ...
BNCOD
2009
13 years 11 months ago
2009
Abstract. Privacy has become increasingly important to the database community which is reflected by a noteworthy increase in research papers appearing in the literature. While rese...
BNCOD
2009
13 years 11 months ago
2009
A lot of research has been done on answering single-item queries, only a few have looked at answering multiple-item queries in data broadcast systems. The few that did, have propos...
BNCOD
2009
13 years 11 months ago
2009
Due to the growing popularity of XML as a data exchange and storage format, the need to develop efficient techniques for storing and querying XML documents has emerged. A common ap...
BNCOD
2007
13 years 11 months ago
2007
Traditionally, database management systems (DBMSs) have been associated with high-cost, high-quality functionalities. That is, powerful capabilities are provided, but only in respo...