摘要
该文论述了用信息模型的理论和方法为ＦＭＳ建立数据库的原理。该文以ＩＤＥＦ１ｘ为基础，提出了形成实体的３条原则，引入交叉实体和有形实体的概念，达到既无数据冗余又最大限度地减少打开数据表的数目，缩短数据存取时间的目的；根据单元控制器的功能和管理ＦＭＳ数据的要求，确定了ＦＭＳ的数据实体和数据表之间的联系，生成了信息模型的功能视图，最后介绍了利用有关支持软件完成从信息模型到实际数据库的转换过程。
The paper discusses the principle of FMS database building with the theory and method of the information model.On the basis of IDEF1x,the author presents three rules to form the entities and draws into cross entities and visual entities,so as to eliminate redundant data,reduce the number of data tables opened to the full and cut down the spending time for data going in and out.According to the function of FMS cell controller and the demands of FMS data management,the relationship between FMS data entities is defined and function view diagrams are designed for the information model.Finally,the paper introduces the transforming procedure from the information model to practical database with the supporting software.
出处
《南京理工大学学报》
EI
CAS
CSCD
1999年第3期201-204,共4页
Journal of Nanjing University of Science and Technology
基金
国防科技预研行业基金
关键词
柔性制造系统
数据库
信息模型
flexible manufacturing system,database,modeling
