[1]张宜红,俞本权,徐宏炳,等.带函数的关系操作[J].东南大学学报(自然科学版),1999,29(3):21-27.[doi:10.3969/j.issn.1001-0505.1999.03.004]
 Zhang Yihong,Yu Benquan,Xu Hongbin,et al.Relational Operations with User-Defined Functions[J].Journal of Southeast University (Natural Science Edition),1999,29(3):21-27.[doi:10.3969/j.issn.1001-0505.1999.03.004]
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带函数的关系操作()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
29
期数:
1999年第3期
页码:
21-27
栏目:
计算机科学与工程
出版日期:
1999-05-20

文章信息/Info

Title:
Relational Operations with User-Defined Functions
作者:
张宜红 俞本权 徐宏炳 王能斌
东南大学计算机科学与工程系,南京 210096
Author(s):
Zhang Yihong Yu Benquan Xu Hongbin Wang Nengbin
Department of Computer Science and Engineering, Southeast University, Nanjing 210096
关键词:
异构数据源集成 关系操作 查询优化
Keywords:
integrating heterogeneous data warehouse relational operations query optimization
分类号:
TP311.13
DOI:
10.3969/j.issn.1001-0505.1999.03.004
摘要:
数据库管理系统中的查询优化处理一直回避处理查询定义中函数运算的优化问题,而在异构数据源集成系统、数据仓库系统和WWW数据库中,大部分的用户查询都涉及到复杂的函数运算,因此,有必要研究带函数的关系操作的优化技术. 本文定义了6种基本的带函数的关系操作,分析了这些操作的变换规则,并给出了一些查询优化策略.
Abstract:
Query optimization implement of DBMS always avoids dealing with the user-defined functions in query language. But in integrated heterogeneous data sources systems, data warehouse systems and WWW databases, most of queries involve complex user-defined functions. So it is necessary to study the optimization of relational operations combined with user-defined functions. This paper defines 6 basic operations combining user-defined functions with relational operations, analyzes their transformation rule and gives some query optimization policies.

参考文献/References:

[1] Manuel G S,Saltor F,Castellanos M.Semantic heterogeneity in multidatabase system.In:Omran A B,Ahmed K E,eds.Object-Oriented Multidatabase System:a Solution for Advanced Applications.New Jersey:Prentice-Hall,1996.179~180
[2] Stonebraker M,Moore D.对象-关系数据库——下一个浪潮.杨冬青等译校.北京:北京大学出版社,1997.138~156
[3] 王能斌.数据库系统.北京:电子工业出版社,1995.24

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 Xiao Li,Jin Yuanping,Xu Hongbing,et al.A New Algorithm for Mining Generalized Association Rules[J].Journal of Southeast University (Natural Science Edition),1997,27(3):76.[doi:10.3969/j.issn.1001-0505.1997.06.015]

备注/Memo

备注/Memo:
第一作者:女,1973年生,博士研究生.
更新日期/Last Update: 1999-05-20