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Semantic queries in databases: problems and challenges

Published: 02 November 2009 Publication History

Abstract

Supporting semantic queries in relational databases is essential to many advanced applications. Recently, with the increasing use of ontology in various applications, the need for querying relational data together with its related ontology has become more urgent. In this paper, we identify and discuss the problem of querying relational data with its ontologies. Two fundamental challenges make the problem interesting. First, it is extremely difficult to express queries against graph structured ontology in the relational query language SQL, and second, in many cases where data and its related ontology are complicated, queries are usually not precise, that is, users often have only a vague notion, rather than a clear understanding and definition, of what they query for. We outline a query-by-example approach that enables us to support semantic queries in relational databases with ease. Instead of endeavoring to incorporate ontology into relational form and create new language constructs to express such queries, we ask the user to provide a small number of examples that satisfy the query she has in mind. Using these examples as seeds, the system infers the exact query automatically, and the user is therefore shielded from the complexity of interfacing with the ontology.

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      cover image ACM Conferences
      CIKM '09: Proceedings of the 18th ACM conference on Information and knowledge management
      November 2009
      2162 pages
      ISBN:9781605585123
      DOI:10.1145/1645953
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      Published: 02 November 2009

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      Author Tags

      1. ontology
      2. query processing
      3. semantic database

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      • (2018)TrueWebProceedings of the International Workshop on Semantic Big Data10.1145/3208352.3208357(1-6)Online publication date: 10-Jun-2018
      • (2016)Towards Shared Security through Distributed Separation of ConcernsProceedings of the International Conference on Research in Adaptive and Convergent Systems10.1145/2987386.2987394(169-172)Online publication date: 11-Oct-2016
      • (2016)Tools, Use Cases, and DiscussionsProcess Analytics10.1007/978-3-319-25037-3_6(135-150)Online publication date: 29-Mar-2016
      • (2015)Geo-tagging non-spatial conceptsProceedings of the Fourth ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems10.1145/2834126.2834138(31-39)Online publication date: 3-Nov-2015
      • (2015)Self-Service Business Intelligence Resulting in Disruptive TechnologyJournal of Computer Information Systems10.1080/08874417.2015.1164579656:1(11-21)Online publication date: 7-Dec-2015
      • (2013)Semantic queries by exampleProceedings of the 16th International Conference on Extending Database Technology10.1145/2452376.2452417(347-358)Online publication date: 18-Mar-2013
      • (2012)Query-by-example approach towards on-demand multidimensional analysisInternational Journal of Business Intelligence and Data Mining10.1504/IJBIDM.2012.0495517:3(137-151)Online publication date: 1-Oct-2012
      • (2010)Graph Data Management and Mining: A Survey of Algorithms and ApplicationsManaging and Mining Graph Data10.1007/978-1-4419-6045-0_2(13-68)Online publication date: 18-Jan-2010

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