A High Level Graphic Database for CAD
Efficient CAD (Computer-Aided Design) software development and maintenance relies heavily on a convenient and versatile graphic database manager. Such a management system does not replace the CAD program, but is driven by the host CAD program to perform a number of database management and editing functions common to all applications. A protocol for such a data management system is proposed in this paper. The main characteristics of this system lie in the object organization, the ability to edit graphic data conveniently, the overall object-tree data structure, and the implementation of a number of high-level interactive functions. Overall, this new generation of software represents a step toward the direction of distributed processing while allowing the host CAD program the maximum flexibility possible in data management.
KeywordsData Management System Graphic Data Device Driver Graphic Database Command Address
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- T. Crane, “PICSYS Reference Guide, Version 0.01,” Program of Computer Graphics, Cornell University, Feb. 1981.Google Scholar