Document (#3006)

Author

Batra, D.
Davis, J.G.

Title

Conceptual data modelling in database design : similarities and differences between expert and novice designers

Source

International journal in man-machine studies. 37(1992) no.1, S.83-101

Year

1992

Abstract

Exploration of the similarities and differences between experts and novices engaged in a conceptual data modelling task, a critical part of overall database design, using data gathered in the form of think-aloud protocols. It was found that the experts focussed on generating a holistic understanding of the problem before developing the conceptual model. They were able to categorize problem descriptions into standard abstractions. The novices tended to have more errors in their solutions due to their inability to integrate the various parts of the problem description and map them into appropriate knowledge structures. The study also found that the expert and novice behaviour was similar in terms of modelling facets, like entity, identifier, descriptor and binary relationship, but quite different in the modelling of unary relationship and category. These findings are discussed

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