Titlebook: CAD*I Database; An Approach to an En Michel Raflik,Bernd Pätzold Book 1990 Springer-Verlag Berlin Heidelberg 1990 CAD.DBMS.Database managem

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Book 1990aided design (CAD) purposes is analyzed and conditions are derived that enable CAD systems to manage CAD models containing increasing amounts of data and more and more intelligent relations. Today CAD models constitute isolated islands of data stored in independent files, and to create and maintain

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The Subset of the CAD*I Data Schema,directions, planar surfaces and topology. A closed model contains geometry in any format (in a second step also a part program or NC-data). It is impossible to look into the closed model, to recognize any structure in it. This view of data is used to archive and exchange data via a common database.

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vel, it is of the highest importance to define the optimum granularity of information to be stored in the database in order to get a good response time from such a system.978-3-540-53383-2978-3-642-84335-8

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