| 时态查询语言的扩展 |
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| 引用本文： | 陈传坎. 时态查询语言的扩展[J]. 燕山大学学报, 2003, 27(4): 317-320 |
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| 作者姓名： | 陈传坎 |
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| 作者单位： | 广州航海高等专科学校,广州,510715 |
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| 摘 要： | 讨论了时态数据库处理不明确时间存在的一些问题，并给出了描述不明确时间间隔的方法。之后扩展了各种时态运算，并给出了与不明确时间相关的新运算符。最后给出了能够处理不明确时间的查询语言扩展。
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| 关 键 词： | 时态数据库 不明确时间间隔 时态运算 时态查询语言 扩展 |
| 修稿时间： | 2003-03-29 |
Extending of Temporal Query Languages |
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| ,.. Extending of Temporal Query Languages[J]. Journal of Yanshan University, 2003, 27(4): 317-320 |
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| Authors: | ,. |
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| Affiliation: | (Chen Chuankai),(Guangzhou Maritime College,Guangzhou 510715). |
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| Abstract: | In this paper, problems of handling time imprecise in temporal databases are discussed and the representations of imprecise time intervals are presented. Then temporal operators are extended and new operators related to time imprecise-ness are presented. Query language extensions is proposed that can dealing with imprecise time. |
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| Keywords: | temporal database imprecise time intervals temporal operate temporal query language. |
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