Bitemporal Data and the Inmon Data Warehouse
This chapter begins with a brief history of data warehousing. It then deconstructs Inmon’s famous definition of a data warehouse, discards certain parts, modifies other parts, adds bitemporality, and reconstructs a new definition. In it, I argue that an Inmon data warehouse, lacking bitemporality, cannot be both time-variant and nonvolatile.
Keywords
ambiguous-time table; as-was data about things; as-was states of things; enterprise data warehouse; federated data warehouse; integrated; nonvolatile; operational data store; physical instantiation; semantic integration; subject-oriented; time-variant; virtual data warehouse
A Brief History of the Data Warehouse
In the 70s and well into the 80s, ...
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