This book contains the refereed proceedings of the 12th International Conference on Business Information Systems, BIS 2009, held in Poznan, Poland, in april 2009.

The 22 revised full papers were carefully reviewed and selected from 74 submissions. Following the theme of the conference "Information Systems for Agile Organizations", the contributions illustrate recent tendencies in making organizations more adaptive and responsive with respect to changing external conditions. They are grouped in sections on ontologies in organizations, ontologies and security, Web search, process modelling, process analysis and mining, service-oriented architecture, and enterprise resource planning.

Inhalt
Ontologies in Organizations.- Organisational Ontology Framework for Semantic Business Process Management.- A Process Oriented Assessment of the IT Infrastructure Value: A Proposal of an Ontology Based Approach.- A Semantic Clinical Knowledge Representation Framework for Effective Health Care Risk Management.- Ontologies and Security.- Ontology-Based Tools for Automating Integration and Validation of Firewall Rules.- Ontological Mapping of Information Security Best-Practice Guidelines.- Supporting the Comparison of Business-Level Security Requirements within Cross-Enterprise Service Development.- Web Search.- Federated Product Search with Information Enrichment Using Heterogeneous Sources.- Parallel Algorithm for Query Content Based Webpages Ranking.- STAR:chart Preserving Data Semantics in Web-Based Applications.- Social Issues.- Advanced Social Features in a Recommendation System for Process Modeling.- Computer Support for Agile Human-to-Human Interactions with Social Protocols.- Process Modelling.- A Requirements Engineering Approach for Data Modelling of Process-Aware Information Systems.- Defining Adaptation Constraints for Business Process Variants.- Process Analysis and Mining.- MMC-BPM: A Domain-Specific Language for Business Processes Analysis.- Strategy-Driven Business Process Analysis.- Case Construction for Mining Supply Chain Processes.- Service-Oriented Architecture.- SOEDA: A Method for Specification and Implementation of Applications on a Service-Oriented Event-Driven Architecture.- Enhancing Semantic Service Discovery in Heterogeneous Environments.- Towards an Implementation of the EU Services Directive with Semantic Web Services.- ERP.- Integrating Process and Data Models to Aid Configuration of ERP Packages.- Designing and Developing MonitoringAgents for ERP Systems.- Organizational Implications of Implementing Service Oriented ERP Systems: An Analysis Based on New Institutional Economics.