Ecologists spend considerable effort integrating heterogeneous data for statistical analyses
and simulations, for example, to run and test predictive models. Our research is focused on …

XML has reached a widespread diffusion as a language for representing nearly any kind of
data source, from relational databases to digital movies. Due to the growing interest toward …

This paper investigates the on-line validation of streaming XML documents with respect to a
DTD, under memory constraints. We first consider validation using constant memory …

We study the representation and querying of XML with incomplete information. We consider
a simple model for XML data and their DTDs, a very simple query language, and a …

Modern applications (Web portals, digital libraries, etc.) require integrated access to various
information sources (from traditional DBMS to semistructured Web repositories), fast …

S trudel is a system for implementing data-intensive Web sites, which typically integrate
information from multiple data sources and have complex structure. S trudel's key idea is …

A broad spectrum of electronic commerce applications is currently available on the Web,
providing services in almost any area one can think of. As the number and variety of such …

Motivation: Many areas of modern biology are concerned with the management, storage,
visualization, comparison and analysis of networks, but no appropriate query language for …

XML is emerging as a new major standard for representing data on the world wide web.
Several XML storage models have been proposed to store XML data in different database …

The Web presents the database area with vast opportunities and commensurate challenges.
Databases and the Web are organically connected at many lev els. Web sites are …