제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Properties of object composition operations for object-oriented CAD database systems

  • Chang, Tae-Soo (Graduate School of Science and Technology, Kobe University) ;
  • Tanaka, Katsumi (Dept. of Instrumentation Engineering, Kobe University)
  • Published : 1989.10.01
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Abstract

In this paper, we introduce a recursively-defined natural join operation as well as well-known object composition operations (union, intersection) for composing CAD database objects. Then, we will discuss how to realize these operations by the message passing computing mechanism. Next, we will discuss what kind of behaviours (methods) are preserved under our natural join operations. Finally, we investigate mathematical properties about the relationships among several object composition operations (natural join, union and intersection).

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