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Conceptual Modelling and Its Theoretical Foundations - Essays Dedicated to Bernhard Thalheim on the Occasion of His 60th Birthday; 01/2012
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Proceedings of the 2011 Joint International Conference on Digital Libraries, JCDL 2011, Ottawa, ON, Canada, June 13-17, 2011; 01/2011
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J. UCS. 01/2010; 16:3073-3101.
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PVLDB. 01/2010; 3:309-319.
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First Workshop on the Theory and Practice of Provenance, February 23, 2009, San Francisco, CA, USA, Proceedings; 01/2009
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Advances in Conceptual Modeling - Challenging Perspectives, ER 2009 Workshops CoMoL, ETheCoM, FP-UML, MOST-ONISW, QoIS, RIGiM, SeCoGIS, Gramado, Brazil, November 9-12, 2009. Proceedings; 01/2009
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Proceedings of the 14th International Conference on Management of Data, December 17-19, 2008, IIT Bombay, Mumbai, India; 01/2008
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Proceedings of the 9th Annual International Conference on Digital Government Research, Partnerships for Public Innovation, DG.O 2008, Montreal, Canada, May 18-21, 2008; 01/2008
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Proceedings of the 8th Annual International Conference on Digital Government Research, Bridging Disciplines & Domains, DG.O 2007, Philadelphia, Pennsylvania, USA, May 20-23, 2007; 01/2007
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Proceedings of the 2006 ACM Symposium on Document Engineering, Amsterdam, The Netherlands, October 10-13, 2006; 01/2006
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Peer-to-Peer, Grid, and Service-Orientation in Digital Library Architectures, 6th Thematic Workshop of the EU Network of Excellence DELOS, Cagliari, Italy, June 24-25, 2004, Revised Selected Papers; 01/2004
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Conceptual Modelling 2004, First Asia-Pacific Conference on Conceptual Modelling (APCCM2004), Dunedin, New Zealand, January 18-22, 2004; 01/2004
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01/2002
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01/2002
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Conceptual Modeling - ER 2002, 21st International Conference on Conceptual Modeling, Tampere, Finland, October 7-11, 2002, Proceedings; 01/2002
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Int. J. on Digital Libraries. 01/1997; 1:20-35.
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ABSTRACT: This paper presents Structured Maps, an additional modeling construct superimposed over available information sources, that provides structured and managed access to data. Structured Maps are based on Topic Navigation Maps, defined by the SGML community to provide multi-document indices and glossaries.
02/1970;
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ABSTRACT: Applications typically have some local understanding of a database schema, a virtual database that may differ significantly from the actual schema of the data where it is stored. Application engineers often support a virtual database using custom-built middleware because the available solutions, including updatable views, are unable to express necessary capabilities. We propose an alternative means of mapping a virtual database to a physical database that guarantees they remain synchronized under data or schema updates against the virtual schema. One constructs a mapping by composing channel transformations (CTs) that encapsulate atomic transformations --- including complex transformations such as pivoting --- with known updatability properties. Applications, query interfaces, and any other services can behave as if the virtual database is the implemented schema. We describe how CTs translate queries, DML, and DDL, and the properties that are necessary for such translation to be correct. We describe two example CTs in detail, and evaluate an implementation of channels for completeness and performance.
Proceedings of the VLDB Endowment. 3(1-2):309-319.
