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Abstract. Open source software is increasingly used by public administrations as an alternative to commercial software. In this paper we present a case study of the transition of the ministerial cabinets of the Brussels-Capital Region towards OpenOfRce.org. In this case, the decision to use open source software was taken by the Government of the Brussels-Capital Region. The goal of the paper is to outline the implementation trajectory followed and to compare our findings to previous studies in this field as well as other Information Systems literature. Additionally, we discuss how OpenOfl^ce.org was received by end users as well as the IT department that was responsible for the migration. Our findings indicate that although a migration towards OpenOfiice.org is feasible, a number of difficulties still remain. For example, end user perceptions of OpenOffice.org are not always favorable and migration costs (document conversion and training) can be significant.

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Normalized Systems theory has recently been established to engineer evolvable information systems. In order to build information systems according to this theory, a method to identify the normalized systems' primitives has to be constructed. Because business processes are currently receiving more attention as process-centric representations of an enterprise, this method should be able to translate business process models into the normalized systems primitives. In this paper, a preliminary mapping method based on proven software engineering principles, is discussed. The proposed method adheres to the normalized systems' viewpoint of business processes being normalized production lines. In this sense, business process production lines are identified as workflow elements operating on a single type of data element. These process lines are operated as state machines, triggering action elements on the specified data element. The mapping method is illustrated using an example of a realistic business process flow. Some initial conclusions on the method construction are presented.