Cascaded ECOLAP operations

Marcin Gorawski, Marcin Bugdoł


The paper proposes the new definitions of Expanded Cascaded OLAP (ECOLAP) operations by using the relation algebra. The operations have been defined for the extended cascaded star schema in spatial data warehouse SDW basing on the existing definitions of the COLAP operations for the cascaded star schema. Moreover, they support extensions presented in the new logical model.


spatial data warehouses; single star; snowflake; cascaded star; COLAP

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Gorawski M., Malczok M.: Materialized aR-tree in Distributed Spatial Data Warehouse. International Journal: Intelligent Data Analysis (IDA), ISSN: 1088-467X, IOS Press Vol.10, nr. 4. 2006. s. 361-377.

Yu S., Atluri V., Adam N. R.: Cascaded star: A hyper-dimensional model for a data warehouse. 17th International Conference on Database and Expert Systems Applications, DEXA 2006. vol. 4080 LNCS. 2006. s. 439-448.

Gorawski M.: Definiowanie schematów rozszerzonej gwiazdy kaskadowej. Konferencja Bazy Danych: Aplikacje i Systemy BDAS’07, 2007, s. 103-114.

Gorawski M., Gębczyk M.: Distributed Approach of Continuous Queries with knn Join Processing in Spatial Data Warehouse. 9th International Conference on Enterprise Information Systems (ICEIS 2007) 1. Madeira - Portugal, 2007, s. 131-136.

Gorawski M., Gorawski M.: Balanced Spatio-Temporal Data Warehouse with R-MVB, STCAT and BITMAP indexes. PARELEC 2006 5-th International Symposium on Parallel Computing in Electrical Engineering, Poland, IEEE CS. 2006, s. 43-48.

Gorawski M., Dyga M.: Indexing of Spatio-Temporal Telemetric Data based on Distributed Mobile Bucket Index. Parallel and Distributed Computing and Networks (PDCN 2006) as part of the 24th IASTED International Multi-Conference on APPLIED INFORMATICS, ACTA Press, 2006, s. 292-297.