A Bi-Temporal Data Warehouse Model.
Christian Koncilia · 2003
In data warehouses measures are analyzed along di#erent dimensions. Although the structures of these dimensions change over time, data warehouse tools currently in use are not able to deal with these modifications in a sophisticated way. In this paper we present a bitemporal extension of the COMET metamodel. This extension enables us to represent not only the valid time of structural modifications, but also the transaction time.