Storage Structure for Handling Schema Versions in Temporal Data Warehouses

摘要

The temporal data warehouse model, an extension of multidimensional model of data warehouses, has already been proposed in the literature to handle the updates of dimension data correctly. In order to maintain a complete history of data in temporal data warehouses (TDW), it is required to manage schema evolution with time, thereby maintaining the complete history of evolution of schema with schema versions as well as evolution of data defined under different versions of schema. This paper proposes an approach for managing schema versions in temporal data warehouses to allow for an effectual management of different versions of schema and their data.