Handling Interlinked XML Instances on the Web

  • Erik Behrends
  • Oliver Fritzen
  • Wolfgang May
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3896)

Abstract

XML instances are not necessarily self-contained but may have links to remote XML data residing on other servers. Links between (autonomous) XML instances can be expressed by the XLink language; although, querying such interlinked sources is not yet actually supported.

We describe a model of such linked XML instances where the links are not seen as explicit links (where the users must be aware of the links and traverse them explicitly in their queries), but where the links define views that combine into a logical, transparent (XML) model that then can be queried by XPath/XQuery. We motivate the underlying modeling and give a concise and declarative specification as an XML-to-XML mapping. We also describe the implementation of the model as an extension of the eXist [exi] XML database system and point out some perspectives and combinations with related research aspects.

Keywords

Query Evaluation Attribute Node Link Element XPath Query XPath Expression 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [ABM+02]
    Abiteboul, S., Benjelloun, O., Manolescu, I., Milo, T., Weber, R.: Active XML: Peer-to-Peer Data and Web Services Integration. In: VLDB (2002)Google Scholar
  2. [ABC+04]
    Abiteboul, S., Benjelloun, O., Cautis, B., Manolescu, I., Milo, T., Preda, N.: Lazy Query Evaluation for Active XML SIGMOD (2004)Google Scholar
  3. [BG03]
    Bremer, J., Gertz, M.: On Distributing XML Repositories. In: WebDB (2003)Google Scholar
  4. [exi]
    eXist: an Open Source Native XML Database, http://exist-db.org/
  5. [FJK96]
    Franklin, M.J., Jonsson, B.T., Kossmann, D.: Performance Tradeoffs for Client-Server Query Processing. In: SIGMOD (1996)Google Scholar
  6. [Kay99]
    Kay, M.: SAXON (1999), http://saxon.sourceforge.net/
  7. [Lin]
  8. [May02]
    May, W.: Querying Linked XML Document Networks in the Web. 11th. WWW Conference (2002), http://www2002.org/CDROM/alternate/166/
  9. [Mon]
    Mondial Database. Mondial, http://dbis.informatik.uni-goettingen.de/
  10. [RBHS04]
    Re, C., Brinkley, J., Hinshaw, K., Suciu, D.: Distributed XQuery. Workshop on Information Integration on the Web, IIWEB (2004)Google Scholar
  11. [Suc02]
    Suciu, D.: Distributed Query Evaluation on Semistructured Data. ACM Transactions on Database Systems (TODS) 27(1), 1–62 (2002)CrossRefGoogle Scholar
  12. [XIn04]
    XML Inclusions (XInclude) (2004), http://www.w3.org/TR/xinclude/
  13. [XLi01]
    XML Linking Language (XLink) (2001), http://www.w3.org/TR/xlink
  14. [XMQ03]
    XML Query Requirements (2003), http://www.w3.org/TR/xmlquery-req
  15. [XPQ01]
    XQuery 1.0 and XPath 2.0 Functions and Operators (2001), http://www.w3.org/TR/xquery-operators
  16. [XPt02]
    XPointer xpointer() Scheme (2002), http://www.w3.org/TR/xptr-xpointer
  17. [XPt03]
    XPointer Framework (2003), http://www.w3.org/TR/xptr-framework

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Erik Behrends
    • 1
  • Oliver Fritzen
    • 1
  • Wolfgang May
    • 1
  1. 1.Institut für InformatikUniversität GöttingenGermany

Personalised recommendations