Towards the definition of spatial data warehouses integrity constraints with spatial OCL
Vers la définition des contraintes d'intégrité d'entrepôts de données spatiales avec spatial OCL
Résumé
Spatial Data Warehouse (SDW) and Spatial OLAP systems (SOLAP) are now an effective solution to perform multidimensional spatial analysis on geographical data. However, the quality of such analysis heavily depends on the quality of stored data. Due to this, some works have been attempted to address the issues of data quality of SDW using Integrity Constraints (IC). In this paper, we propose a conceptual framework for SDW IC based on two new classifications. Moreover, we describe the specification and implementation of some IC classes using the Object Constraint Language (OCL) and an automatic code generator, called Spatial OCL2SQL.