Simplified Data Structure for "Mini-Based" Turnkey CAD Systems

Joseph Peled
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引用次数: 1

Abstract

The most fundamental building blocks in any CAD system are the data structure and associated data base management routines. The performance of application programs is directly dependent on the data base access time and the efficiency of the management subroutines which are the interface between data base and application programs. The designer of a minicomputer based CAD system is always faced with the need to design a data structure and interface since the available commercial Data Base Management Systems (DBMS) cannot be used due to special restrictions imposed on the data base and associated management routines by the minibased CAD environment. This paper discusses the requirements and design of such a minibased CAD data base and management system.
“小型”交钥匙CAD系统的简化数据结构
在任何CAD系统中,最基本的构建模块是数据结构和相关的数据库管理例程。应用程序的性能直接取决于数据库访问时间和作为数据库与应用程序接口的管理子程序的效率。由于小型CAD环境对数据库和相关管理程序的特殊限制,现有的商业数据库管理系统(DBMS)无法使用,因此基于小型计算机的CAD系统的设计者总是面临着设计数据结构和接口的需要。本文讨论了基于微型计算机辅助设计数据库和管理系统的需求和设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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