temporal database

Study on Data Dependency Theory in Temporal Database

时态数据库数据依赖理论研究

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Method for Distributed Simulation Data Collection Based on Temporal Database

基于时态数据库的分布仿真数据收集方法

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Discussion on a Temporal Database System for User Information

用户信息时态数据库系统分析

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Time processing method in the design of temporal database system

时态数据库系统设计中的时间因素处理

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Based on the TR, according to the properties of temporal data, a method of designing initiative expert database is proposed, and describes detail of system's power and structure.

基于TR，针对时间数据的特点，给出时序主动专家数据库系统的设计方法，并对系统的功能、结构进行了详细的描述。

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Thus, a change in spatio temporal database is represented by a change over a state, which can be projected to object domain, space domain and time domain separately in order to explicitly represent change over object, space and time.

按照对象域、空间域和时间域将时空数据库中的变化分别投影分解，显式地表达在对象、空间和时间上的变化。

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The Achievements, Deficiency and Future Work in Temporal Database

时态数据库的成果、缺陷与未来&时态数据库二十年回顾之二

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A real-time multidatabase system provides a platform for integrating real-time data sources. It can not only process persistent data in traditional database systems, but also deal with temporal data in real-time systems.

实时多数据库系统提供了一个实时数据集成管理平台，它不仅可以处理传统数据库中的持久性数据，而且可以处理实时系统中的即时数据。

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Mining Temporal Database of Valid-time Indeterminacy Based on Probability

基于概率的有效时间不确定的时态数据库挖掘

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We contrasted the indexing structures in spatial database, temporal database and spatio-temporal database and give a description of indexing technologies in relation database.

对空间数据库、时序数据库和时空数据库的索引结构进行对比讨论，系统的描述了与之对应的索引技术问题。

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By means of extended relational database model, a view-based framework of constructing spatio-temporal data model is proposed to integrate the attribute of time and space.

通过扩展关系型数据模型，提出一种基于视图的时空数据模型构造方法，实现空间属性和时间属性一体化。

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Currently, the spatial and temporal database application development process, researchers have found that spatial data is increasing with increasing data structures are complex, expensive operation, so the spatial query is bound to the difficulties and the breakthrough point of the spatio-temporal database applications.

目前，在时空数据库的实际应用开发过程中，研究者们发现空间数据量日益具增，数据结构复杂，操作代价昂贵，因此空间查询势必成为时空数据库应用的难点和突破点。

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Last century 70 decade, temporal knowledge has been begun to study in fields of database, knowledge storehouse, artificial intelligence and software engineering, etc.

上世纪70年代，在数据库、知识库、人工智能、软件工程、知识工程等领域，已经开始了关于时间知识（temporal knowledge）的研究。

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The temporal database has unique advantages in time operation and processing.

时态数据库在时间运算和处理方面有独到的优势。

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According to temporal effectiveness, DAIR can be divided into electronic publication, dynamic information, online library bibliographic database, online databases and special documents. From the five types of information, the paper has analyzed the utilization of DAIR both at home and abroad.

本文从网上出版物、动态信息、联机馆藏书目数据库、联机数据库和特色文献，这五方面入手，分析了国内外数字化农业信息资源的利用。

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However, there is no complete temporal database management system yet by now.

但是时态数据库技术的应用仍然停留在初级阶段，到目前为止还没有一个完全的时态数据库管理系统问世。

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