Data warehouse clustering on the web

In collaborative e-commerce environments, interoperation is a prerequisite for data warehouses that are physically scattered along the value chain. Adopting system and information quality as success variables, we argue that what is required for data warehouse refreshment in this context is inherently more complex than the materialized view maintenance problem and we offer an approach that addresses refreshment in a federation of data warehouses. Defining a special kind of materialized views, we propose an open multi-agent architecture for their incremental maintenance while considering referential integrity constraints on source data.