XQBE: A Graphical Interface for XQuery Engines

  • Daniele Braga
  • Alessandro Campi
  • Stefano Ceri
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2992)

Abstract

XQuery is increasingly popular among computer scientists with a SQL background, since queries in XQuery and SQL require comparable skills to be formulated. However, the number of these experts is limited, and the availability of easier XQuery “dialects” could be extremely valuable. Something similar happened with QBE, initially proposed as an alternative to SQL, that has then become popular as the user-friendly query language supported by MS Access. We designed and implemented XQBE, a visual dialect of XQuery that uses hierarchical structures, coherent with the hierarchical nature of XML, to denote the input and output documents.

Our demo consists of examples of queries in XQBE and shows how our prototype allows to switch between equivalent representations of the same query.

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References

  1. 1.
    Braga, D., Campi, A.: A graphical environment to query xml data with xquery. In: Proc. of the 4th WISE, Roma, Italy (December 2003)Google Scholar
  2. 2.
    Zloof, M.M.: Query-by-example: A data base language. IBM Systems Journal (1977)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Daniele Braga
    • 1
  • Alessandro Campi
    • 1
  • Stefano Ceri
    • 1
  1. 1.Politecnico di MilanoMilanoItaly

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