Business intelligence (BI), which includes OLAP, data warehouses and data marts, and data mining, is an area of significant ongoing growth. A common thread in BI technologies is that they fundamentally deal with time history and involve logic based on time. For example, a typical data warehouse stores sales information that a company reports according to time periods; the basic sales data may have a history of revisions. BiTemporal database designs enhance BI technologies by providing a general framework for temporal data.

BiT...