This document proposes an algebra for XML Query. The algebra has been submitted to the
W3CXM L Query Working Group. A novel feature of the algebra is the use of regular …

Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces,
require the management of voluminous repositories of resource metadata. The Resource …

The paper describes a prototype tool, named DIXSE, which supports the integration of XML
Document Type Definitions (DTDs) into a common conceptual schema. The mapping from …

XML (Extensible Markup Language) has emerged as the standard data-exchange format for
Internet-based business applications. These applications introduce a new set of data …

This paper proposes XAL, an XML ALgebra. Its novelty is based on the simplicity of its data
model and its well-defined logical operators, which makes it suitable for composability …

We are addressing the efficient processing of continuous XML streams, in which the server
broadcasts XML data to multiple clients concurrently through a multicast data stream, while …

This document proposes an algebra for XML Query. The algebra has been submitted to the
W3C XML Query Working Group. A novel feature of the algebra is the use of regular …

The availability of large amounts of heterogeneous distributed web data necessitates the
integration of XML data from multiple XML sources for many reasons. For example, currently …

For a long time topological predicates between spatial objects have been a main area of
research on spatiald ata handling, reasoning, and query languages. But these predicates …

In this paper we propose a mediator architecture for the querying and integration of Web-
accessible XML data sources. Our contributions are (i) the definition of a simple but …