Invited Paper -- Generic Model Management: A Database Infrastructure for Schema Manipulation -- The Evolution of Distributed Component Architectures -- Data Integration Is Harder than You Thought -- Agent Systems -- Implicit Culture for Multi-agent Interaction Support -- Extending Multi-agent Cooperation by Overhearing -- Mobile-Agent Based Distributed Web GIS -- Local Distributed Agent Matchmaking -- Deploying Distributed State Information in Mobile Agent Systems -- Cooperative Meeting Scheduling among Agents Based on Multiple Negotiations -- Information Integration -- Autoplex: Automated Discovery of Content for Virtual Databases -- Cooperation Strategies for Information Integration -- Planning and Optimizing Semantic Information Requests Using Domain Modeling and Resource Characteristics -- Integrating View Schemata Using an Extended Object Definition Language -- Deriving “Sub-source” Similarities from Heterogeneous, Semi-structured Information Sources -- Middleware, Platforms, Architectures -- P-Grid: A Self-Organizing Access Structure for P2P Information Systems -- Moving Active Functionality from Centralized to Open Distributed Heterogeneous Environments -- Generic Constraints for Content-Based Publish/Subscribe -- Supporting Heterogeneous Users in Collaborative Virtual Environments Using AOP -- Models -- A Process Service Model for Dynamic Enterprise Process Interconnection -- Employing Multiuser Interactions in the Development of Synchronous Applications -- Service Representation, Discovery, and Composition for E-marketplaces -- Multi and Federated Database Systems -- Schema Design and Query Processing in a Federated Multimedia Database System -- Global Semantic Serializability: An Approach to Increase Concurrency in Multidatabase Systems -- Checking Integrity Constraints in Multidatabase Systems with Nested Transactions -- Web Information Systems -- The Internet Marketplace Template: An Architecture Template for Inter-enterprise Information Systems -- Investigating the Evolution of Electronic Markets -- Coordinating Web-Based Systems with Documents in XMLSpaces -- Validating an Access Cost Model for Wide Area Applications -- Workflow Management Systems -- Querying and Splicing of XML Workflows -- On Demand Business-to-Business Integration -- Recommendation and Information Seeking Systems -- Yoda: An Accurate and Scalable Web-Based Recommendation System -- The Use of Machine-Generated Ontologies in Dynamic Information Seeking.