Dynamic Aspects Of Semantic And Object-Oriented Databases

语义和面向对象数据库的动态方面

• 批准号: 9109520
• 负责人: Jianwen Su
• 金额: $ 6万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9109520&HistoricalAwards=false
• 关键词: Dynamic; Aspects; Semantic; Object; Oriented

In recent years, the need for developing techniques and methodologies for the design, representation and manipulation of transactions or behaviors has become clear. This research focuses on the study and development of theoretical foundations for object-based database manipulation languages. Several fundamental problems concerning dynamic constraints and update transactions in the context of semantic and object-based models are investigated. One aspect is the formal analysis of object behaviors under a behavior modeling construct used to compose andstructure transactions in projects TAXIS, INSYDE, DAIDA, etc. The initial study is based on a simple object-oriented data model including class hierarchies, attributes ranging over printable values, and methods. Another topic is the study of behavior modeling primitives as new kinds of dynamic constraint and also compare them with other kinds of dynamic constraint. More general database models (e.g., to allow attributes ranging over classes) are also considered. The investigations into these problems yield a better understanding of these modeling constructs and insights into the impact of Object Identifiers on database manipulation languages.

近年来，开发技术和 设计、表示和操作的方法 交易或行为变得清晰。 本研究 侧重于研究和发展的理论基础 基于对象的数据库操作语言。 几 动态约束与更新的基本问题 语义和基于对象的模型中的事务 被调查。 一方面是对对象的形式化分析 行为建模构造下的行为， 并在项目TAXIS、INSYDE、DAIDA等中构建交易。 最初的研究是基于一个简单的面向对象的数据模型 包括类层次结构、可打印的 价值观和方法。 另一个主题是行为研究 作为一种新的动态约束的建模原语， 与其他类型的动态约束进行比较。 更 通用数据库模型（例如，允许属性范围超过 类）也被考虑。 对这些问题的调查 问题产生更好的理解这些建模 对象标识符对 数据库操作语言