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

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,NIDIC — The Neutral Interface Data Dictionary,The main task of a data dictionary is to administrate data fields and their relations as data structures or data base tables. It is a data definition catalogue.

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Administrative Data Manager,In this chapter, the different screens used to show interactively the functionality of the CAD*I Neutral Database Interface are described.

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CAD*I Database Group Achievements and Experiences,According to the developments performed, the situation reached in the CAD*I Database group is the following:

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NHG-Standaarden voor praktijkassistente 2010directions, 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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computer aided 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

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NHG-Standaarden voor praktijkassistente 2010ssible 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. To inform about the content, each closed model possesses a set of administrative data.

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Book 1990ional DBMS associated with the language SQL (ISO standard) is the ideal tool to create and maintain such relations. At the implementation level, 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.