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抄録
For automatic CAD data exchange, a method was proposed based on data format which consists of data structures, algorithms and data. This method uses a three schema architecture which consists of an application schema, conceptual schema and physical file data schema. The conceptual schema plays a role of neutral data structure between an application schema and physical file data schema. An experimental system based on the above method was developed. Then a test regarding 2-D CAD data exchange was demonstrated. From the experimental results, it is recognized that the proposed method is useful for the CAD data exchange.
