Web, Web-Services, and Database Systems: NODe 2002 Web- and Database-Related Workshops Erfurt, Germany, October 7–10, 2002 Revised Papers

323 Pages·2003·7.37 MB·English

by  Keith G. Jeffery (auth.)

Lecture Notes in Computer Science 2593
EditedbyG.Goos,J.Hartmanis,andJ.vanLeeuwen
3
Berlin
Heidelberg
NewYork
Barcelona
HongKong
London
Milan
Paris
Tokyo
Akmal B. Chaudhri Mario Jeckle
Erhard Rahm Rainer Unland (Eds.)
Web, Web-Services,
and Database Systems
NODe 2002 Web- and Database-Related Workshops
Erfurt, Germany, October 7-10, 2002
Revised Papers
1 3
SeriesEditors
GerhardGoos,KarlsruheUniversity,Germany
JurisHartmanis,CornellUniversity,NY,USA
JanvanLeeuwen,UtrechtUniversity,TheNetherlands
VolumeEditors
AkmalB.Chaudhri
Wimbledon,LondonSW193DF,UK
E-mail:[email protected]
MarioJeckle
DaimlerChryslerCorporateResearchCenterUlm
WilhelmRungeStraße11,89073Ulm,Germany
E-mail:[email protected]
ErhardRahm
Universita¨tLeipzig,Institutfu¨rInformatik
Augustusplatz10-11,04109Leipzig,Germany
E-mail:[email protected]
RainerUnland
UniversityofEssen,InstituteforComputerScience
Schu¨tzenbahn70,45117Essen,Germany
E-mail:[email protected]
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Preface
Net.ObjectDays (NODe) has established itself as one of the most significant events on
Objects, Components, Architectures, Services and Applications for a Networked
World in Europe and in the world. As in previous years, it took place in the Messe-
kongresszentrum (Fair and Convention Center) in Erfurt, Thuringia, Germany, this
time during 7–10 October 2002. Founded only three years ago as the official succes-
sor conference to JavaDays, STJA (Smalltalk and Java in Industry and Education) and
JIT (Java Information Days), NODe has grown into a major international conference
that attracts participants from industry, research and users in equal measure since it
puts strong emphasis on the active exchange of concepts and technologies between
these three communities.
Over the past few years, the NODe conference has developed a remarkable track
record: a new paradigm (Generative Programming) was born at NODe (citation
James Coplien), nearly all of the most prominent researchers and contributors in the
object-oriented field (and beyond) have given keynotes at NODe, new topics have
been integrated (like Agent Technology and Web-Services) and, now, for the first
time, postconference proceedings are being published by Springer-Verlag. Altogether
three volumes will be available. This volume is compiled from the best papers of the
Web Databases and the Web-Services workshops. Two additional volumes will be
published, one containing the best contributions of the main conference and another
one with the best contributions to the agent-related workshops and the 3rd Interna-
tional Symposium on Multi-Agent Systems, Large Complex Systems, and E-Businesses
(MALCEB 2002) that were cohosted with NODe 2002: M. Aksit, M. Mezini, R. Un-
land (editors) Objects, Components, Architectures, Services, and Applications for a
Networked World (LNCS 2591) and R. Kowalczyk, J. Müller, H. Tianfield, R. Unland
(editors) Agent Technologies, Infrastructures, Tools, and Applications for e-Services
(LNAI 2592).
This volume contains the keynote speeches as well as 19 peer-reviewed, original
papers that were chosen from the papers accepted for the workshops. This means that
the papers in this volume are a subset of the papers presented at the conference, which
in turn were selected by the programme committees out of the submitted papers based
on their scientific quality, the novelty of the ideas, the quality of the writing, and the
practical relevance. This double selection process not only guaranteed high-quality
papers but also allowed the authors to consider comments and suggestions they had
received during the conference and to integrate them into their final version. Further-
more, authors were allowed to extend their papers to fully fledged versions. We hope
that the results will convince you as much as they did us and that these proceedings
give you many new inspirations and insights.
The contents of this volume can best be described by an excerpt from the original Call
for Papers:
VI Preface
Web Databases
The workshop centers on database technology and the Web. Flexibility, scalability,
heterogeneity and distribution are typical characteristics of the Web infrastructure.
Whereas these characteristics offer rich potential for today’s and future application
domains, they put high demands on database systems and especially their architecture,
testing interoperability, access to and maintenance of structured and semistructured
(heterogeneous) data sources, and the integration of applications. Of particular im-
portance and interest to the workshop is database support for XML (Extensible
Markup Language) and Web-services.
WS-RSD 2002
Web-services promise to ease several current infrastructure challenges. Especially
they are expected to herald a new era of integration: integration of data, processes,
and also complete enterprises on the basis of a set of loosely related lightweight ap-
proaches that hide all technical implementation details except the Web, which serves
as the basic transport and deployment mechanism. Interoperability will surely prove
itself as the critical success factor of the Web service proliferation promised by some
analysts. In order to accomplish this interoperability, various standardization bodies
such as the W3C, UN and OASIS have initiated activities working on specifications
of building blocks of a Web-service architecture. Nevertheless, a significant number
of vendors now offer the first commercial solutions, which have been implemented to
create some real-world services.
As editors of this volume, we would like to thank once again all programme commit-
tee members, as well as all external referees for their excellent work in evaluating the
submitted papers. Moreover, we would like to thank Mr. Hofmann from Springer-
Verlag for his cooperation and help in putting this volume together.
December 2002 Akmal B. Chaudhri,
Mario Jeckle,
Erhard Rahm,
Rainer Unland
2nd Annual International Workshop
“Web Databases”
of the Working Group “Web and Databases” of the
German Informatics Society (GI)
Organizers
Akmal B. Chaudhri, IBM developerWorks, USA
Erhard Rahm, University of Leipzig, Germany
Rainer Unland, University of Essen, Germany
Members of the International Programme Committee
Wolfgang Benn, TU Chemnitz
Ron Bourret, Independent Consultant
Hosagrahar V. Jagadish, University of Michigan
Udo Kelter, University of Siegen
Alfons Kemper, University of Passau
Thomas Kudraß, HTWK Leipzig
Meike Klettke, University of Rostock
Marco Mesiti, University of Genoa
Ingo Macherius, Infonyte GmbH
Kjetil Nørvåg, Norwegian University of Science and Technology
Jaroslav Pokorný, Charles University
Awais Rashid, University of Lancaster
Werner Retschitzegger, University of Linz
Harald Schöning, Software AG
Gottfried Vossen, University of Münster
Gerhard Weikum, University of Saarbrücken
VIII Organization
Workshop on
“Web-Services – Research, Standardization, and
Deployment”
(WS-RSD 2002)
Organizer
Mario Jeckle
DaimlerChrysler Corporate Research Center Ulm
Wilhelm Runge Str. 11
89073 Ulm, Germany
E-mail: m a r i o @ j e c k l e . d e
Members of the International Programme Committee
Dieter Fensel, Vrije Universiteit Amsterdam
Christopher Ferris, Sun Microsystems
Bogdan Franczyk, University of Leipzig
Frank Leymann, IBM
Jean-Philippe Martin-Flatin, CERN
Erich Ortner, Technical University of Darmstadt
Günther Specht, University of Ulm
Michael Stal, Siemens
Matthias Weske, Hasso-Plattner Institute Potsdam
Liang-Jie Zhang, IBM T.J. Watson Research Center
Table of Contents
Keynotes
GRIDs and Ambient Computing .................................... 1
Keith G. Jeffery
Natix: A Technology Overview...................................... 12
Thorsten Fiebig, Sven Helmer, Carl-Christian Kanne,
Guido Moerkotte, Julia Neumann, Robert Schiele, Till Westmann
Intelligent Support for Selection of COTS Products ................... 34
Gu¨nther Ruhe
Regular Papers
Advanced Web-Services
DAML Enabled Web Services and Agents in the Semantic Web ......... 46
M. Montebello, C. Abela
Building Reliable Web Services Compositions......................... 59
Paulo F. Pires, Mario R.F. Benevides, Marta Mattoso
NSPF: Designing a Notification Service Provider Framework
for Web Services .................................................. 73
Bahman Kalali, Paulo Alencar, Donald Cowan
UDDI Extensions
Active UDDI – An Extension to UDDI for Dynamic and
Fault-Tolerant Service Invocation ................................... 91
Mario Jeckle, Barbara Zengler
WS-Specification: Specifying Web Services Using UDDI Improvements... 100
Sven Overhage, Peter Thomas
Description and Classification of Web-Services
Modeling Web Services Variability with Feature Diagrams.............. 120
Silva Robak, Bogdan Franczyk
A Dependency Markup Language for Web Services.................... 129
Robert Tolksdorf