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Active database support for STEP/EXPRESS models

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Abstract

The ISO STEP specifications aim to provide an effective means through which product information can be shared and exchanged between applications and enterprises. EXPRESS is a modelling language within the STEP specifications, which is used to describe product data. An EXPRESS model can be implemented on a database repository, queried upon and manipulated. However, EXPRESS models capture only the static aspects of a system. In this paper, proposed extensions to the EXPRESS language are made in order to model the dynamic behaviour of products and processes. A translator is implemented to transform such models to an active database, which has been developed on an object-oriented database, ObjectStore. The active component of the system is based on CLIPS, an expert system. Throughout the paper, a case based on a workflow process is used to demonstrate how a model can be mapped onto an active database.

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Authors and Affiliations

  1. School of Applied Science, Nanyang Technological University, Nanyang Avenue, Singapore, 639798

    Y. DONG , C. F. Y. CHEE , Y. HE  & A. GOH

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  1. Y. DONG
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  2. C. F. Y. CHEE
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  3. Y. HE
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  4. A. GOH
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DONG , Y., CHEE , C.F.Y., HE , Y. et al. Active database support for STEP/EXPRESS models. Journal of Intelligent Manufacturing 8, 251–261 (1997). https://doi.org/10.1023/A:1018581426556

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  • DOI: https://doi.org/10.1023/A:1018581426556

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