计算机与现代化 ›› 2013, Vol. 1 ›› Issue (5): 52-56.doi: 10.3969/j.issn.1006-2475.2013.05.012
• 数据库 • 上一篇 下一篇
黄慧
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HUANG Hui
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摘要： 为了处理以时间为推移的数据库中不完全信息和矛盾信息，学术界提出了基于时态的次协调数据库的数据模型。本文基于此模型，初步讨论并给出关系运算符的相关性质，根据建立的关系运算符的若干性质对查询语句优化，从而提升查询速度。
关键词: 次协调数据库, 四值逻辑, 时态, 查询优化
Abstract: In order to deal with the incomplete and contradictory information in data over time, the academia proposes a data model basd on temporal paraconsistent database. Based on this model, this paper preliminary discusses and gives the related properties of relational operators, and according to the established relationship between certain properties of operators the query language is optimized, so as it improves the query speed.
Key words: paraconsistent database, fourvalued logic, temporality, query optimization
中图分类号:
TP311.131
黄慧. 基于时态的次协调数据库性质与查询优化[J]. 计算机与现代化, 2013, 1(5): 52-56.
HUANG Hui. Property and Query Optimization of Temporal Paraconsistent Database[J]. Computer and Modernization, 2013, 1(5): 52-56.
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链接本文: http://www.c-a-m.org.cn/CN/10.3969/j.issn.1006-2475.2013.05.012
http://www.c-a-m.org.cn/CN/Y2013/V1/I5/52
