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一种时态数据形式语言模型 被引量:2

Formal Languages Model for Temporal Data
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摘要 数据模型是数据库技术发展的主线,时态数据模型是时态数据库系统的核心与基础。针对时态数据模型的研究现状,初步探讨了时态数据模型的基本要素,建立了一种形式化时态数据模型;基于形式语言理论和形式语义学的指称语义方法,进一步建立了该时态数据模型的形式语言模型。应用时态数据形式语言模型定义了各类时态完整性约束的形式语义规则,深入分析了时态数据模型内在的时态语义联系,为时态数据模型的研究提供了一个便利、高效的形式化理论框架。 Data model is the main clue of trends in database technology,and tempoaral data model is the core and basis of temporal database system.This paper discussed preliminarily some basic elements of data model in accordance with the status quo of temporal data model,made a temporal data model formalized,and further made a formal languages model of this temporal data model based on formal languages theory and denotational semantics method of formal semantics.By the formal languages model this paper defined some formal semantics rules for all kinds of temporal integrityconstraints,and deeply analyzed inherent temporal semantics relationships of temporal data model,which provides an efficient and convenient formalization theory framework for studying temporal data model.
出处 《计算机科学》 CSCD 北大核心 2012年第4期172-176,204,共6页 Computer Science
基金 国家自然科学基金(61103038) 广东省教育部产学研结合项目(2010B090400335) 韶关学院科研项目(201020704)资助
关键词 模型 形式语言 时态数据 完整性约束 形式语义 Model Formal languages Temporal data Integrity constraints Formal semantics
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参考文献10

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共引文献5

同被引文献19

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