Automatically generating OLAP schemata from conceptual graphical models
Proceedings of the 3rd ACM international workshop on Data warehousing and OLAP
Query optimization by using derivability in a data warehouse environment
Proceedings of the 3rd ACM international workshop on Data warehousing and OLAP
The Design and Development of a Logical System for OLAP
DaWaK 2000 Proceedings of the Second International Conference on Data Warehousing and Knowledge Discovery
Enhancing Data Warehousing with Fuzzy Technology
DEXA '99 Proceedings of the 10th International Conference on Database and Expert Systems Applications
Multidimensional databases
Conceptual multidimensional models
Multidimensional databases
Multidimensional databases
Operators for multidimensional aggregate data
Multidimensional databases
Querying multidimensional data
Multidimensional databases
Two approaches to the integration of heterogeneous data warehouses
Distributed and Parallel Databases
Bridging the semantic gap in OLAP models: platform-independent queries
Proceedings of the ACM 11th international workshop on Data warehousing and OLAP
Visual Modelling of Data Warehousing Flows with UML Profiles
DaWaK '09 Proceedings of the 11th International Conference on Data Warehousing and Knowledge Discovery
Extending OCL for OLAP querying on conceptual multidimensional models of data warehouses
Information Sciences: an International Journal
Graphical querying of multidimensional databases
ADBIS'07 Proceedings of the 11th East European conference on Advances in databases and information systems
DaWaK'06 Proceedings of the 8th international conference on Data Warehousing and Knowledge Discovery
A strategy for maintaining client-based web warehouse
HSI'05 Proceedings of the 3rd international conference on Human Society@Internet: web and Communication Technologies and Internet-Related Social Issues
On the need of a reference algebra for OLAP
DaWaK'07 Proceedings of the 9th international conference on Data Warehousing and Knowledge Discovery
Querying spatial and temporal data by condition tree: two examples based on environmental issues
ICCSA'13 Proceedings of the 13th international conference on Computational Science and Its Applications - Volume 1
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In this paper, we address the issue of designing effective query languages for OLAP databases. The basis of our investigation is MD, a new data model for multidimensional databases that, unlike other multidimensional models, is independent of any specific implementation (relational or proprietary multidimensional) and as such provides a clear separation between practical and conceptual aspects. In this framework, we present and compare two query languages, based on different paradigms, for OLAP databases. The first language is algebraic and provides an effective way to manipulate multidimensional data in a procedural fashion. Although this language is clean and powerful, it is clearly not suited for final users. We therefore propose a high-level graphical language that allows the user to specify analytical queries in a natural and intuitive way.