Ingrid Wetzel

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Integrated information systems require new approaches to participatory design because of the heterogeneity of the user groups involved. This applies especially to the context of work settings with complex cooperation and joint tasks as in hospitals. Integrated systems for these work settings should provide explicit cooperation support besides " simple "(More)
The problems associated with the development of hospital information systems and their implementation in organizations have been the subject of much literary debate. The perspectives taken in regards to this phenomenon are often similar to the debate in IS design in general , in that the overseen social and organizational factors of IS implementation are(More)
It is claimed that object-oriented databases overcome many of the limitations of the relational data model especially by generalizing the notion of object identiication. A clear distinction between objects and values turns out to be essential for the object-oriented approach whereas the rela-tional model is based exclusively on values. Since, however, value(More)
Designations used by companies to distinguish their products are often claimed as trademarks or registered trademarks. In all instances in which Morgan Kaufmann Publishers is aware of a claim, the product names appear in initial capital or all capital letters. Readers, however, should contact the appropriate companies for more complete information regarding(More)
Today, participation seems to be an established, necessary as well as valuable approach during system development. However, because of the shift from individually developed to package software participatory design needs to be addressed in new ways. In this article we evaluate our consulting experience during the customization of an integrated hospital(More)
STYLE is a method to systematically construct a customized development environment (CDE) for a given high-level data model by exploiting and extending an existing persistent programming environment along three dimensions. On the functional dimension, polymorphic types and higher-order functions are used to extend the system functionality with new generic(More)
The DAIDA project has made an attempt of formally defining and relating declarative and computational entities considered relevant to the process of database application development. Such entities range from object-oriented specifications to executable modules of database programs. To bridge the gap between semantics and computation , they also include(More)