Web Web Services and Database Systems : NODe 2002 Web and Database Related Workshops Erfurt Germany October 7–10 2002 Revised Papers Keynotes GRIDs and Ambient Computing Natix: A Technology Overview Intelligent Support for Selection of COTS Products Regular Papers DAML Enabled Web Services and Agents in the Semantic Web Building Reliable Web Services Compositions NSPF: Designing a Notification Service Provider Framework for Web Services Active UDDI An Extension to UDDI for Dynamic and Fault Tolerant Service Invocation WS Specification: Specifying Web Services Using UDDI Improvements Modeling Web Services Variability with Feature Diagrams A Dependency Markup Language forWeb Services Web Based Service for Embedded Devices Using Ontology to Bind Web Services to the Data Model of Automation Systems eXist: An Open Source Native XML Database WrapIt: Automated Integration of Web Databases with Extensional Overlaps Enhancing ECA Rules for Distributed Active Database Systems Improving XML Processing Using Adapted Data Structures Comparison of Schema Matching Evaluations Indexing Open Schemas On the Effectiveness of Web Usage Mining for Page Recommendation and Restructuring XML Fragment Caching for Small Mobile Internet Devices Support for Mobile Location Aware Applications in MAGNET The XML Query Language Xcerpt: Design Principles Examples and Semantics. This book constitutes the thoroughly refereed post proceedings of the Web and Database Related Workshops held during the NetObjectDays international conference NODe 2002 in Erfurt Germany in October 2002. The 19 revised full papers presented together with 3 keynote papers were carefully selected during 2 rounds of reviewing and improvement. The papers are organized in topical sections on advanced Web services UDDI extensions description and classification of Web services applications based on Web services indexing and accessing Web and XML databases mobile devices and the Internet and XML query languages.