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.

作为管理日益复杂的工程设计的一种方法，设计自动化社区正在转向使用分层设计工具：对正在设计的复杂结构的多层表示进行操作的工具，以便使设计的更低、更详细的方面得以实现。除非用户明确要求查看这些方面，否则设计是不可见的。 本研究将调查分层、高度交互的设计环境对存储设计信息的数据库管理系统的性能要求的影响。 其他人完成的工作表明，扩展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，其中（1）大量使用主内存缓存，（2）非关系实现，以及（3）分层设计工具。 本研究的目标是对分层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，并测试使用扩展关系数据库是否可以获得令人满意的更新性能。 为此，首席研究员将使用Magic，一个分层的VLSI布局编辑器；收集专家设计师使用 Magic 的协议； 并根据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。