| 摘要: |
| 随着电子产品迅速发展，设计涉及的信息量日益增大，数据格式种类繁多，工程和设计数据管理系统已越来越成为电子产品CAD框架的关键构成部分．本文提出以面向对象方法管理框架系统中的工程和设计数据，对其中的关键部分数据模型作了研究，并给出了DDL实现．该系统已应用到电子CAD框架系统中。 |
| 关键词: 计算机辅助电子设计，面向对象，框架系统，数据模型，DDL |
| DOI： |
| 分类号: |
| 基金项目:本研究得到国家863支持. |
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| DATA MODEL AND DDL WITHIN A FRAM EWORK SYSTEM |
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Pan Xuezeng,Shou Yucheng,Zhao Yuping,Ping Lingdi
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| Abstract: |
| As electronic products developing rapidly，the information of the design is in-creasing and requires a more powerful data management system．The engineering design data management system is a crucial component in an ECAD framework when the design involves large volume of data in diversified format．This paper identifies the requirements for such a system and presents the approaches that support these requirements．This paper presents a data model and its corresponding DDL．This system is currently under develop-ment and will be released in the next generation of the electronic products ECAD frame-work． |
| Key words: Computer aided electronic design,object oriented,framework system,data model,DDL． |
