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Title:
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Understanding constraint expressions in large conceptual schemas by automatic filtering
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Author:
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Villegas Niño, Antonio; Olivé Ramon, Antoni; Sancho Samsó, María Ribera
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de Serveis i Sistemes d'Informació; Universitat Politècnica de Catalunya. MPI - Modelització i Processament de la Informació |
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Abstract:
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Human understanding of constraint expressions (also called schema rules) in large conceptual schemas is very di cult. This is due to the fact that the elements (entity types, attributes, relationship types) involved in an expression are de ned in di fferent places in the schema, which may be very distant from each other and embedded in an intricate web of irrelevant elements. The problem is insignifi cant when theconceptual schema is small, but very signi cant when it is large. In this paper we describe a novel method that, given a set of constraint expressions and a large conceptual schema, automatically filters the conceptual schema, obtaining a smaller one that contains the elements of interest forthe understanding of the expressions. We also show the application of the method to the important case of understanding the specication of event types, whose constraint expressions consists of a set of pre and postconditions. We have evaluated the method by means of its application to a set of large conceptual schemas. The results show that the method is eff ective and e cient. We deal with conceptual schemas in UML/OCL,but the method can be adapted to other languages. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Sistemes d'informació
-Filtering
-Large conceptual schemas
-Sistemes experts (Informàtica) -- Filtratge |
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Rights:
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Document type:
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Article - Draft
Conference Object |
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Published by:
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Springer
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