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Modeling Design Objects and Processes

  • Book
  • © 1991

Overview

Editors:
  1. Takaaki Yagiu

    1. Nihon Unisys, Ltd., Minato-ku, Tokyo 107, Japan

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Part of the book series: Computer Graphics: Systems and Applications (COMPUTER GRAPH.)

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Table of contents (10 chapters)

  1. Front Matter

    Pages i-x
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  2. Introduction

    • Takaaki Yagiu
    Pages 1-20

  3. Requirements of CAD Databases

    • Takaaki Yagiu
    Pages 21-46

  4. Criticism of Past and Current Data Models

    • Takaaki Yagiu
    Pages 47-93

  5. First Order Theory and Its Interpretation

    • Takaaki Yagiu
    Pages 94-110

  6. Criticism of Logical Approaches

    • Takaaki Yagiu
    Pages 111-162

  7. Philosophical Discussions

    • Takaaki Yagiu
    Pages 163-195

  8. The Fundamental Structure of the Design Object Model

    • Takaaki Yagiu
    Pages 196-222

  9. The Model Description Language (MDL)

    • Takaaki Yagiu
    Pages 223-254

  10. Modeling the Design Process

    • Takaaki Yagiu
    Pages 255-303

  11. Implementation and Remaining Problems

    • Takaaki Yagiu
    Pages 304-320

  12. Back Matter

    Pages 321-330
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Keywords

About this book

A little more than a decade ago my colleagues and I faced the necessity for providing a database management system which might commonly serve a number of different types of computer aided design applications at different manufacturing enterprises. We evaluated some wellknown cases of conceptual models and commercially available DBMSs, and found none fuHy meeting the requirements. Yet the analysis of them led us to the development of what we named the Logical Structure Management System (LMS). Syntactically the LMS language is somewhat similar to ALPHA by E. F. Codd. The underly­ ing conceptual model is entirely different from that of the relational model, however. LMS has been since put into practical use, meanwhile a further ef­ fort in search of asound theoretical base and a concrete linguistic framework for true product modeling together with comparative studies of various ap­ proaches has been made. Here, the term product modeling is used to signify the construction of informational models of design objects and design pro­ cesses in which it must be possible to include not a fixed set of attributes and relations, such as geometry, physical properties, part-of hierarchy, etc. , but whatever aspects of design designers may desire to be included. The purpose of this book is to present the major results of the said effort, which are primarily of a theoretical or conceptual nature. Following the intro­ duction (Chap.

Editors and Affiliations

  • Nihon Unisys, Ltd., Minato-ku, Tokyo 107, Japan

    Takaaki Yagiu

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