Titlebook: Advances in Databases and Information Systems; 10th East European C Yannis Manolopoulos,Jaroslav Pokorny,Timos K. Sell Conference proceedin

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Lecture Notes in Computer Sciencetables requires (at least temporarily) having the information from these tables in the same place. This requires the Data Warehouse to store auxiliary materialized views that in many cases contain duplicated information. In this article, we study this problem, and we propose a method that minimizes

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https://doi.org/10.1007/978-94-015-9153-9onstitute an absolute requirement and the discovery can be done interactively (semi-automatically) with human expert intervention. Such applications are, for instance, often met in e-science. The proposed approach is an extension and adaptation of the compositional information systems development (C

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https://doi.org/10.1007/978-94-015-9153-9l index can be improved by using dynamic labelling. Because of the limitation, in this paper we just study the .-index improved from the 1-index, and the .-index improved from the .(.)-index. The construction and refinement of these indexes are based on our results from the properties of partitions

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Stefania Bandini,Sara Manzoni,Carla Simoneegrating caching policies on a CDN’ s infrastructure. Using a simulation testbed, our results indicate that there is much room for performance improvement in terms of perceived latency, hit ratio and byte hit ratio. Moreover, we show that the combination of caching with replication fortifies CDNs against flash crowd events.

Militia

Somayyeh Belbasi,M. Ebrahim Foulaadvand at a physical level. Our approach is mainly oriented to users analysis objectives expressed according to an . and merged with XML data sources. The resulted XML Schema represents the logical model of a data warehouse. Whereas, XML documents validated against the analysis objectives populate the physical model of the data warehouse, called the ..

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https://doi.org/10.1007/978-3-031-14926-9tributes is considered by spreadsheet reasoning methods for functional dependencies. Another representation by the semilattice of closed attribute sets can also be used in parallel due to convenient conversion facilities.

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https://doi.org/10.1007/978-3-319-44365-2load an adequate subset of the navigational sequence on a specific browser, before the next sequence is launched. It also takes into account the most commonly used sequences, being the ones to be preloaded more often.

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