A Model and Language for Bitemporal Schema Versioning in Data Warehouses

@article{RechyRamirez2006AMA,
  title={A Model and Language for Bitemporal Schema Versioning in Data Warehouses},
  author={E.-J. Rechy-Ramirez and Edgard Ben{\'i}tez-Guerrero},
  journal={2006 15th International Conference on Computing},
  year={2006},
  pages={309-314}
}
A data warehouse (DW) is a vast collection of historical data built to support multidimensional data analysis applications. In this context, an important problem is that of evolving the implementation (multidimensional, relational) schema of a DW to incorporate new requirements. This paper introduces a conceptual evolution model based on bitemporal versioning of multidimensional schemas, which allows one to modify the DW schema (a) in an implementation-independent manner, and (b) without… 

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