Querying and Updating Advanced Database Systems: Languages and Computational Aspects

查询和更新高级数据库系统：语言和计算方面

• 批准号: 9802288
• 负责人: Victor Vianu
• 金额: $ 24.51万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9802288&HistoricalAwards=false
• 关键词: Querying; Updating; Advanced; Database; Systems

The area of databases has evolved rapidly in recent years in response to new requirements of advanced applications. Databases must now handle a wide variety of data types, ranging from relational to textual, sequential, spatial, audio, etc. Data is increasingly heterogeneous and globally distributed among a variety of sources. And, applications increasingly require functionalities such as activeness. These developments pose new challenges to the design and implementation of query and update languages, and raise fundamentally novel issues that require developing specific, principled approaches. The aim of the proposed research is to develop such approaches to querying and updating advanced database systems, focusing primarily on the logical level: languages and computational aspects. The results of the project are expected to yield better understanding of basic problems facing current database systems, and will provide tools to facilitate the principled design and implementation of query and update languages. They will contribute to technological advances in several fast-developing areas: representing and querying information on the Web, applications requiring activeness capabilities (such as electronic commerce), and applications handling heterogeneous data (such as spatial databases). http://www-cse.ucsd.edu/users/vianu/IIS-9802288.html

近年来，为了响应高级应用程序的新需求，数据库领域发展迅速。数据库现在必须处理各种各样的数据类型，从关系到文本、顺序、空间、音频等。数据越来越异构，分布在全球的各种来源中。而且，应用程序越来越需要诸如活跃性之类的功能。这些发展对查询和更新语言的设计和实现提出了新的挑战，并提出了一些根本性的新问题，需要开发具体的、原则性的方法。拟议研究的目的是发展这种查询和更新先进数据库系统的方法，主要集中在逻辑一级：语言和计算方面。预期该项目的结果将使人们更好地了解当前数据库系统所面临的基本问题，并将提供工具，以促进有原则地设计和执行查询和更新语言。它们将促进几个快速发展领域的技术进步：在Web上表示和查询信息、需要活跃功能的应用程序（如电子商务）以及处理异构数据的应用程序（如空间数据库）。http://www-cse.ucsd.edu/users/vianu/IIS-9802288.html