Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Multidimensional Database Technology
Computer
The COMET Metamodel for Temporal Data Warehouses
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
Summarizability in OLAP and Statistical Data Bases
SSDBM '97 Proceedings of the Ninth International Conference on Scientific and Statistical Database Management
Creation and management of versions in multiversion data warehouse
Proceedings of the 2004 ACM symposium on Applied computing
A survey on summarizability issues in multidimensional modeling
Data & Knowledge Engineering
Automatic validation of requirements to support multidimensional design
Data & Knowledge Engineering
CIKM '10 Proceedings of the 19th ACM international conference on Information and knowledge management
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Data warehouse (DW) schema and instances may undergo several changes coming from data sources or from user analysis requirements. In order to be able to handle these changes, we have proposed a multiversion DW (MV-DW) model, which has to manage temporal versions of DW schema components and dimension members. Since this model is based on a multidimensional structure enhanced by temporal and versioning extensions, it requires several integrity constraints to maintain the consistency of its structure and data. The present paper first describes our meta-model for MV-DW. Then, a set of multiversion DW constraints are defined under three classes: structural constraints, temporal constraints and versioning constraints. Each of these constraints is expressed under the Object Constraint Language (OCL). Finally, we show that the MV-DW consistency can be maintained by running algorithms that have to check the defined integrity constraints.