Jürgen Koch

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The goal of this paper is to present framework technologies from another perspective: Component technology and framework concepts as a solution for providing tailorability at the user level. We introduce and discuss groupware as one application domain where tailorability is a critical issue and present the framework based architecture of our group editor(More)
Database queries explicitly containing existential and universal quantification become increasingly important in a number of areas such as integrity checking, interaction of databases and AI systems, heterogeneous databases, and statistical databases. Using a concept of range nesting in relational calculus expressions, the paper describes evaluation(More)