The purpose of the 4th International Conference on Enterprise Information Systems (ICEIS) was to bring together researchers, engineers and practitioners interested in the advances and business applications of information systems.

Preface. Conference Committee. Invited Papers: E-commerce concerns: do we need to change some systems?; N. Chapin. E-workcell: a virtual reality web-based decision support system for assembly line planning; O. Gusikhin, et al. New technology great opportunities: how to exploit them; I. Bider, M. Khomyakov. How informatics can solve methodological gap in e-business modeling; M.J. Matsumoto. Part 1: Databases and Information Systems Integration. Data representation in industrial systems; C. Raibulet, C. Demartini. An XML-based virtual patient records system for healthcare enterprises; Zhang Xiaoou, Pung Hung Keng. Using full match classes for self-maintenance of mediated views; V. Magalhaes, et al. A system for data change propagation in heterogeneous information systems; C. Constantinescu, et al. Semi-automatic wrapper generation and adaption: living with heterogeneity in a market environment; M. Christoffel, et al. FSQL: a flexible query language for data mining; R.A. Carrasco, et al. Using data mining techniques to analyze correspondence between user and scientific knowledge in an agricultural environment; D. Sanchez, et al. Implementation of fuzzy classification query language in relational databases using stored procedures; Y. Veryha. Part 2: Artificial Intelligence and Decision Support Systems. Storage of fuzzy information in continuous classifying associative memories; A.B. Bailon, et al. A case-based expert system for estimating the cost of refurbishing construction buildings; F. Marir, et al. Proof running two state-of-the-art pattern recognition techniques in the field of direct marketing; S. Viaene, et al. Simple decision support system based on fuzzy repertory table; J.J. Castro-Schez, et al. Supporting the optimisation of distributed data mining by predicting application run times; S, Krishnaswamy, et al. Part 3: Information Systems Analysis and Specification. Business modelling with UML: distilling directions for further research; S.de Cesare, et al. Updating data in GIS: how to maintain database consistency?; H. Kadri-Dahmani, A. Osmani. Analysis of the relation between the prescriptive and descriptive approaches of the information system planning; J.L.N. Audy. Designing business processes and communication structures for e-business using ontology-based enterprise models with mathematical models; H.M. Kim, K.D. Tham. Ontologies supporting business process re-engineering; A. Galatescu, T. Greceanu. Sequence constraints in business modelling and business process modelling; M. Snoeck. Analysing communication in the context of a software production organisation; M.C.C. Baranauskas, et al. A functional size measurement method for event-based object-oriented enterprise models; G. Poels. Conceptual architecture for the assessment and improvement of software maintenance; F. Garcia, et al. A tool for assessing the consistency of websites; S. Steinau, et al. Part 4: Internet Computing and Electronic Commerce. An automated approach to quality-aware web publications; A. Ruiz, et al. Internet technology as a business tool: a test of its effectiveness; S. Bruque. Towards extended price models in XML standards for electronic product catalogues; O. Kelkar, et al. A semi-universal e-commerce agent: domain-dependant information gathering; A. Pivk, M. Gams. E-commerce business practices in the EU; H. Jahankhani, S.A. Alexis. Automatic verification of security in payment protocols for electronic commerce; M. Panti, et al. Staged implementation of e-business networks through ERP: a case study of Siemens (1998 2001); C.G. Ash, J.M. Burn. Author Index.