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Building Dynamic Market Places Using HyperQueries

  • Christian Wiesner
  • Peter Winklhofer
  • Alfons Kemper
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2287)

Abstract

Electronic market places and virtual enterprises have become important applications for query processing [2]. Building a scalable virtual B2B market place with hundreds or thousands participants requires highly flexible, distributed query processing capabilities. Architecting an electronic market place as a data warehouse by integrating all the data from all participating enterprises in one centralized data repository incurs severe problems: - Security and privacy violations: The participants of the market place have to relinquish the control over their data and entrust sensitive information to the market place host. - Coherence problems: The coherence of highly dynamic data, such as availability and shipping information, may be violated due to outdated materialized data in the market place’s data warehouse. - Schema integration problems: Using the warehouse approach all relevant data from all participants have to be converted à priori into the same format. Often, it would be easier to leave the data inside the participant’s information systems, e.g., legacy systems, within the local sites, and apply particular local wrapper operations. This way, data is only converted on demand and the most recent coherent state of the data is returned. - Fixed query operators: In a data warehouse-like electronic market place, all information is converted into materialized data. This is often not desirable in such complex applications like electronic procurement/bidding.

Keywords

Query Processing Market Place Virtual Enterprise Reference Architecture Electronic Market Place 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    R. Braumandl, M. Keidl, A. Kemper, D. Kossmann, A. Kreutz, S. Seltzsam, and K. Stocker. ObjectGlobe: Ubiquitous query processing on the Internet. The VLDB Journal: Special Issue on E-Services, 10(3):48–71, August 2001.MATHGoogle Scholar
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    A. Jhingran. Moving up the food chain: Supporting E-Commerce Applications on Databases. ACM SIGMOD Record, 29(4):50–54, December 2000.CrossRefGoogle Scholar
  3. 3.
    A. Kemper and C. Wiesner. HyperQueries: Dynamic Distributed Query Processing on the Internet. In Proc. of the Conf. on Very Large Data Bases (VLDB), pages 551–560, Rome, Italy, September 2001.Google Scholar
  4. 4.
    A. Kemper and C. Wiesner. HyperQueries: Dynamic Distributed Query Processing on the Internet. Technical report, Universität Passau, Fakultät für Mathematik und Informatik, October 2001. Available at http://www.db.fmi.uni-passau.de/publications/papers/HyperQueries.pdf.

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Christian Wiesner
    • 1
  • Peter Winklhofer
    • 1
  • Alfons Kemper
    • 1
  1. 1.Fakultät für Mathematik und InformatikUniversität PassauPassauGermany

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