文章总结了时态GIS的研究现状，介绍了时间数据库与时空数据库的概念以及类型。
In this paper, Authors sum up the actuality of Temporal GIS, and introduce the conception and the type of Time Database and Space-Time Database.
提出了在数据库设计中时间数据库这一重要概念，应用这一概念，较好地实现了税收计划管理与分析系统。
This paper introduces an important concept of Tbase in database designing. Using thisconcept, taxing plan management and analysis system has been realized very well.
每月的CD - ROM升级不只包含测试规程，它还带有一个针对每种测试设备的校准间隔时间数据库。
The monthly CD-ROM update contains more than just test procedures. It contains a database of calibration intervals for each piece of test equipment.
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