This article deal with some considerations of conceptual normalisation and very briefly how can be derived the relational and object normalisation from it. This contribution is only an introduction to this very interesting and serious issue, but infrequently discussed. Nor it is a comprehensive paper covering all particular problems and questions and offering precise mathematical proofs of auth...

The notion of class is widely used in systems analysis and data modeling methodologies and is fundatnental to emergitig object-oriented approaches. However, there are no theory-based guidelines for evaluating the quality of a collection of classes selected to model an application. In this paper, we assume that the class is used as a modeling construct in an effort to follow more closely the way...

We present a closed-form, physically based solution for recovering a 3-D solid model from collections of 3-D surface measurements. Given a sufficient number of independent measurements, the solution is overconstrained and unique except for rotational symmetries. We then present a physically based objectrecognition method that allows simple, closed-form comparisons of recovered 3-D solid models....

This paper presents a concept for the evaluation of data modeling which is based on existing theoretical approaches and an empirical study conducted by the author. The main results of this study with respect to evaluation suggest to focus more on organizational issues of modeling, more on process instead of product quality, to consider different application scenarios of data modeling as well as...