Compressed data cubes for OLAP aggregate query approximation on continuous dimensions
KDD '99 Proceedings of the fifth ACM SIGKDD international conference on Knowledge discovery and data mining
Equivalence of Relational Algebra and Relational Calculus Query Languages Having Aggregate Functions
Journal of the ACM (JACM)
Phenomena: a visual query language for continuous fields
GIS '03 Proceedings of the 11th ACM international symposium on Advances in geographic information systems
Multiresolution amalgamation: dynamic spatial data cube generation
ADC '04 Proceedings of the 15th Australasian database conference - Volume 27
Conceptual Modeling for Traditional and Spatio-Temporal Applications: The MADS Approach
Conceptual Modeling for Traditional and Spatio-Temporal Applications: The MADS Approach
Fundamentals of Database Systems (5th Edition)
Fundamentals of Database Systems (5th Edition)
Advanced Data Warehouse Design: From Conventional to Spatial and Temporal Applications (Data-Centric Systems and Applications)
Spatial aggregation: language and applications
AAAI'96 Proceedings of the thirteenth national conference on Artificial intelligence - Volume 1
Multidimensional structures dedicated to continuous spatiotemporal phenomena
BNCOD'05 Proceedings of the 22nd British National conference on Databases: enterprise, Skills and Innovation
Physical design and implementation of spatial data warehouses supporting continuous fields
DaWaK'10 Proceedings of the 12th international conference on Data warehousing and knowledge discovery
Towards a model for the multidimensional analysis of field data
ADBIS'10 Proceedings of the 14th east European conference on Advances in databases and information systems
Analyzing continuous fields with OLAP cubes
Proceedings of the ACM 14th international workshop on Data Warehousing and OLAP
A personalization process for spatial data warehouse development
Decision Support Systems
A generic data model and query language for spatiotemporal OLAP cube analysis
Proceedings of the 15th International Conference on Extending Database Technology
Modeling and Querying Continuous Fields with OLAP Cubes
International Journal of Data Warehousing and Mining
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Data warehouses and On-Line Analytical Processing (OLAP) provide an analysis framework supporting the decision making process. In many application domains, complex analysis tasks often require to take geographical information into account. Several proposals exist for integrating OLAP and Geographic Information Systems (GIS). However, there are very few attempts to support continuous fields, i.e., phenomena that are perceived as having a value at each point in space and/or time. Examples of such phenomena include temperature, altitude, or land use. In this paper, we extend a conceptual multidimensional model with continuous fields, showing that this can be achieved by defining an appropriate data type that encapsulates the different operations needed for manipulating such fields. We also define a query language based on relational calculus that allows expressing spatial OLAP queries involving continuous fields, and use this language to formally characterize this class of queries.