Sommaire de la publication

Sommaire de la publication

Résumé

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Abstract

Fulfilling the needs of spatial database users may require the capability to describe a same reality according to different points of view as well as different abstraction levels. This is the case for example of web-based systems that support « maps-on-demand » (MOD) and systems built for the interactive exploration of spatial data (SOLAP: spatial on-line analytical processing). Such applications require a flexible database view engine that supports simultaneously geometric multiplicity, semantic multiplicity and graphical multiplicity. This paper presents the requirements specific to MOD and SOLAP with regards to multiple representations. In particular, fundamental concepts about geometric, semantic and graphical multiplicities are defined. Then, we introduce an innovative concept aimed at meeting these requirements: the VUEL (View Element). We believe this new solution is a step towards very flexible systems that can support different views involving different multiplicities and different levels of abstraction.