Titlebook: Database Applications Semantics; Robert Meersman,Leo Mark Book 1997 IFIP International Federation for Information Processing 1997 Keynote.

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Between Positivism and Relativismew is essential..This paper analyzes the effect of stepwise refinement of behavior as part of the process of defining views of complex objects. It also studies the effects of stepwise refinement on the validity of complex constraints in complex objects.

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Information Visualization: The Need for a Data Base Approachentations, meta-data about the data will be needed. We give two examples of systems in which meta-data enables automatic generation of visual views: a dialogue-box generation tool for user interfaces and data entry, and a WWW visual navigation tool.

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