RIA: An Object-Oriented Extensible View System for Computer-Aided Design Applications

RIA：用于计算机辅助设计应用程序的面向对象的可扩展视图系统

• 批准号: 9309076
• 负责人: Elke Rundensteiner
• 金额: $ 10万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-15 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9309076&HistoricalAwards=false
• 关键词: RIA; Object; Oriented; Extensible; View

RIA: An Object-Oriented Extensible View System for Computer- Aided Design Applications Computer-Aided Design (CAD) systems typically use an object- oriented database (OODB) to integrate diverse design data into one repository accessed by all design tools. Such a central database is a critical bottleneck preventing the extensibility of the CAD system over time, and forcing all design tools to work on the same (comprehensive and hence extremely complex) data model. Clearly, there is a conflict between supplying design tools with customized design representations and integrating design data into one uniform model. This research effort addresses this problem by extending OODB technology by two advanced features: (1) design views and (2) schema change support. To support customized design representations, mechanisms to manage individualized tool interfaces of the CAD database are being implemented (which free individual design tools from having to maintain mappings between the global data model and local design views). To support the extensibility of the CAD system, the view system will be augmented with schema change functionality. It is this unique integration of both capabilities that makes the Object-Oriented Extensible View System (OOEVS) a radically new tool for supporting CAD applications. Extensive experiments will be performed to evaluate OOEVS and its application for building complex software systems (in particular, CAD systems). The proposed research is significant in that it provides a solution to the important problem of CAD tool integration and extends state-of-the-art databases with powerful functionalities.

RIA：一种用于计算机辅助设计应用程序的面向对象的可扩展视图系统计算机辅助设计（CAD）系统通常使用面向对象的数据库（OODB）将不同的设计数据集成到所有设计工具都可以访问的一个存储库中。 这样的中央数据库是一个关键瓶颈，阻碍了 CAD 系统随着时间的推移的可扩展性，并迫使所有设计工具在相同的（全面且极其复杂）的数据模型上工作。 显然，为设计工具提供定制的设计表示与将设计数据集成到一个统一的模型中之间存在冲突。 这项研究工作通过扩展 OODB 技术的两个高级功能来解决这个问题：(1) 设计视图和 (2) 模式更改支持。 为了支持定制的设计表示，正在实施管理 CAD 数据库的个性化工具界面的机制（这使各个设计工具不必维护全局数据模型和本地设计视图之间的映射）。为了支持 CAD 系统的可扩展性，视图系统将通过架构更改功能进行增强。正是这两种功能的独特集成，使面向对象的可扩展视图系统 (OOEVS) 成为支持 CAD 应用程序的全新工具。将进行大量实验来评估 OOEVS 及其在构建复杂软件系统（特别是 CAD 系统）方面的应用。 所提出的研究意义重大，因为它为 CAD 工具集成的重要问题提供了解决方案，并扩展了具有强大功能的最先进的数据库。