Titlebook: New Trends in Databases and Information Systems; 17th East European C Barbara Catania,Tania Cerquitelli,Athena Vakali Conference proceeding

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New Trends in Databases and Information Systems: Contributions from ADBIS 2013,w management issues, and new kind of architectures and systems. The 17th East-European Conference on Advances in Databases and Information Systems (ADBIS 2013), held on September 1–4, 2013 in Genova, Italy, and associated satellite events aimed at covering some emerging issues concerning such new tr

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New Ontological Alignment System Based on a Non-monotonic Description Logicheir use. We must be capable of assuring a maximum of expressiveness in the definition of ontologies’ concepts and relations by taking into account the normal context aspect and the exception one. The second very important point is the simultaneous use of several ontologies in a purpose of sharing i

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R + + -Tree: An Efficient Spatial Access Method for Highly Redundant Point Dataes we call it R.-tree. The original R.-tree was designed for both point and spatial data. Using R.-tree for indexing spatial data is very inefficient. In our research we face the problem of indexing product catalogues data that can be represented as point data. Therefore we suggested the R.-tree for

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Distributed Processing of XPath Queries Using MapReduceeduce algorithm based on a query decomposition which computes all expected answers in one MapReduce step. The algorithm can be applied over large XML data which is given either as a single distributed document or as a collection of small XML documents.

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A Query Language for Workflow Instance Datawe employ agent-based simulations that require workflow definitions with associated data about workflow instances. For example, to optimize the clinical pathways of patients with stroke we need the time and associated costs of each step in the clinical pathway. We adapt an existing conceptual model