Research Initiation: Relational Databases in a Hierarchical Design Environment

研究启动：分层设计环境中的关系数据库

• 批准号: 8809569
• 负责人: Marianne Winslett
• 金额: $ 4.75万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-01 至 1991-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8809569&HistoricalAwards=false
• 关键词: Research; Initiation; Relational; Databases; Hierarchical

As a way of managing the growing complexity of engineering designs, the design automation community is moving towards the use of hierarchical design tools: tools that operate on multi- layer representations of the complex structures being designed, so that lower, more detailed aspects of a design are not visible until the user specifically requests to see those aspects. This research will investigate the impact of a hierarchical, highly interactive design environment on the performance requirements for a database management system storing design information. Work completed by others shows that extended relational databases can exhibit satisfactory data retrieval performance in a design environment with (1) heavy use of main-memory caching, (2) a non-relational implementation, and (3) hierarchical design tools. The goal of this research is to develop a finer-grained examination of the data retrieval and update performance requirements of hierarchical design tools, and to test whether satisfactory update performance can be obtained using an extended relational database. To this end, the principal investigator will instrument Magic, a hierarchical VLSI layout editor; collect protocols of Magic's use by expert designers; and analyze these protocols against appropriate models of database access costs. This project will include support for one undergraduate student.

作为管理工程设计日益增长的复杂性的一种方式，设计自动化社区正在朝着使用层次设计工具的使用：在设计复杂结构的多层表示上运行的工具，因此，直到用户专门要求查看这些方面，才能看到设计的较低，更详细的方面。 这项研究将研究层次，高度交互式设计环境对数据库管理系统存储设计信息的性能要求的影响。 其他人完成的工作表明，扩展的关系数据库可以在设计环境中表现出令人满意的数据检索性能，（1）大量使用主内存缓存，（2）非相关实现，以及（3）层次设计工具。 这项研究的目的是对层次设计工具的数据检索和更新性能要求进行更细粒度的检查，并测试是否可以使用扩展的关系数据库获得令人满意的更新性能。 为此，首席研究员将为层次的VLSI布局编辑器提供魔术；收集专家设计师的魔术使用协议； 并针对适当的数据库访问成本模型分析这些协议。 该项目将包括对一名本科生的支持。