This paper considers conceptual modelling for three purposes namely data modelling, knowledge modelling and ontology modelling. It differentiates between the nature of the conceptual models for these three. It then proposes a representation suitable for ontology modelling.

Work in the field of recording standard, coded data is important to reduce medical errors caused by misinterpretation and misrepresentation of data. The paper discusses the need to ensure that the source of the data i.e. the clinical data model is unambiguous to increase the quality and accuracy of the data mapping to terminology codes. The study chooses one especially ambiguous data model and ...

Using various administrative and tax data sources to replace key variables collected in business surveys can significantly reduce both survey cost and response burden. Data collected from administrative sources, however, are generally not subjected to the same data quality and consistency checks as those for survey data, and often do not correspond exactly with the variables targeted in the sur...

XML as the most successful data representation format makes it easy to start working with structured data because of the simplicity of XML documents and DTDs, and because of the general availabilityof tools. This paper first describes the origin and features of XML as a markup language. In a second part, the question of how to use the features provided by XML for structuring content is addresse...

The quality aspects of spatial data are very important in the decision-making process. However, the quality inspection of spatial data is still dependent on manual checking, and there is an urgent need to develop an automatic or semi-automatic generic system for spatial data quality inspection. In this paper, we present a general framework that automatically copes with spatial data quality insp...

ion is an essential element in data modelling that appears mainly in one of the following forms: generalisation, classification or aggregation. In the design of complex products classification hierarchies can be found product families that are viewed as classes of product types, while product types are seen as classes of product instances. So far data models, if they support levels of classific...

This research examined the effect of music use, personality and prior knowledge on mood and work performance of 62 Systems Analysts. Although the quality of the data modeling task did not appear to be affected by the experimental treatment of 10 minutes of music listening, the level of extraversion, modeling proficiency, and theoretical knowledge related to modeling showed significant effects. ...

This paper raises some methodological concerns about the conduct, analysis and interpretation of results from the Programme for International Student Assessment (PISA) study. While, in many respects PISA represents an advance on previous attempts at international comparative assessment studies, it retains certain problematic aspects. The article comments on the restricted nature of the data mod...