Web Data Management Distributed Access Structures

IH* : A New Hash-Based Multidimensional SDDS

Classic one-dimensional data structures are very important. Nevertheless, the new data management systems (CAD, Web,..) need new access methods that support efficiently spatial operations on multi-attributes (multidimensional ) data files. Scalable Distributed Data Structures (SDDS) is a new class of data structures conceived specially for multicomputers: collection of PCs and workstations inte...

Sharing of Probabilistically Correlated Data in Peer-to-Peer Networks

The impact of Peer-to-Peer (P2P) networks on the Internet landscape is undisputed. It has led to a series of new applications, e.g., as part of the socalled Web 2.0. The shift from the classical client-server based paradigm of the Internet, with a clear distinction between information providers and consumers, towards consumers sharing information among each other led to the rise of the P2P para...

Active XML, Security and Access Control

XML and Web services are revolutioning the automatic management of distributed information, somewhat in the same way that HTML, Web browsers and search engines modified human access to world wide information. We argue in this paper that the combination of XML and Web services allows for a novel distributed data management paradigm, where the exchanged information mixes materialized and intensio...

GIMMI: Geographic Information and Mathematical Models Inter-operability

GIMMI project, started in April 2002, aims at bridging the gap of communication in the Pesticide Impact Assessment domain between Data Providers (soil, meteorology, agronomy, pesticide experts), Scientists (chemists, geologists, modellers and academic institutions), Service Providers (local and central governments, public administration bodies, private chemical industries manufacturing pesticid...

Distributed data management with access control : social Networks and Data of the Web. (Gestion de Données Distribuées avec Contrôle d'Accès : réseaux sociaux et données du Web)