| 摘要: |
| 时间无处不在的特性要求数据库管理系统提供模拟现实世界中与时间有关的数据的设施．本文建立了一个模糊时态关系代数，它避免了本文中提到的现有时态数据库的一个弱点． |
| 关键词: 时态数据库，历史数据库，关系代数，模糊数据库 |
| DOI： |
| 分类号: |
| 基金项目:清华大学智能技术与系统实验室资助 |
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| A FUZZY TEMPORAL RELATIONAL ALGEBRA |
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Zhang Shichao,Luo Xudong
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| Abstract: |
| The ubiquitous nature of time requires that a database management system provide facilities for modelling of time aspect of data in the real world. This paper establishes a fuzzy temporal relational algebra. This algebra avoids a weakness in the current temporal database techniques, which will be pointed out in this paper. |
| Key words: Temporal database, historical database, relational algebra, fuzzy database. |
