Business Information Systems

BIS 2009 held in Pozna? was the 12th in a series of international conferences on Business Information Systems. The BIS conference series has been recognized by professionals from its very beginning as a forum for the exchange and d- semination of topical research in the development implementation application and improvement of computer systems for business processes. The theme of the conference was Information Systems for Agile Organi- tions. The material collected in this volume covers recent tendencies in making organizations more responsive to external conditions. On the one hand onto- gies are adopted as a tool for better data and information management. On the other hand ?exible information systems based on process orientation are being developed. A set of 22 papers illustrating these trends were selected for presentation during the main event. The articles are grouped into the following conference topics: Ontologies in Organizations Ontologies and Security Process Modelling Process Analysis and Mining Service-Oriented Architecture Web Search SocialIssues andERP. The Program Committee consisted of over 90 members who carefully ev- uated all the submitted papers. The careful review process assured that each paper underwent thorough evaluation and received many valuable comments. Only the best-quality papers were selected resulting in an acceptance rate of less than 30%. The regular program was complemented by outstanding keynote speakers. We were honored to host leading experts in business process management and information management: Wil van der Aalst (Eindhoven University of Techn- ogy The Netherlands) and Asunción Gómez-Pérez (Universidad Politécnica de Madrid Spain).