[1]蒋夏军,皮德常.基于XML的时态数据管理[J].南京师范大学学报(工程技术版),2008,08(04):082-86.
　Jiang Xiajun,Pi Dechang.Temporal Data Management Based on XML[J].Journal of Nanjing Normal University(Engineering and Technology),2008,08(04):082-86.
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基于XML的时态数据管理
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
08卷
期数:
2008年04期
页码:
082-86
栏目:
出版日期:
2008-12-30

文章信息/Info

Title:
Temporal Data Management Based on XML
作者:
蒋夏军;皮德常;
南京航空航天大学信息科学与技术学院, 江苏南京210016
Author(s):
Jiang Xiajun; Pi Dechang
College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
关键词:
XML;  时态数据;  数据模型
Keywords:
XML;  tem po ra l data;  da tam ode l
分类号:
TP311.13
摘要:
时态数据的多种查询操作要求数据以时间为基准成组存放,XML文档中数据的半结构化特性很好地适应了这一要求.在不考虑索引技术等查询优化方法的情况下,时态数据文件的长度是影响查询效率的关键因素之一.首先探讨了两种常用的表示时间属性的方法:属性时戳模型和元素时戳模型;提出了一种新的方法:前缀时戳模型.在3种时态XML数据模型的基础上,利用XML文档中祖先元素与子孙元素在时间区间上的相关性,消除了文档中的时间冗余信息,实验结果表明这一方法能够取得较好的压缩比.
Abstract:
The effic iency of som e query operations can bene fit from temporally grouped data models greatly. And the sem -i structural cha racter istic of XML docum ent is we ll su ited for such m ode ls of tempora l database. W ithout cons idering the query optim ization o f index techno logy, the length of tem po ra l data docum ent is one o f the key factors for the query operations. Tw om ethods o f tim e representa tion for tempora lXML database-attribution tim e- stamped m ode l and elem ent tim e- stamped m ode l are researched firstly in th is pape r. Then a new m ethod, tex t prefix tim e-stamped mode,l is presented. Based on the three temporal XML data m odels, the elim ina tion of tim e info rm ation redundancy is also studied by m ak ing use o f tim e in terva l re lationship among e lem en ts of the tem poral XM L do cum ents. Exper im ents show tha t a fter elim ina ting o f tim e in fo rm ation redundancy, the leng th o f documents is rap idly dropped

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 南京航空航天大学引进人才科研基金( S0677- 042)资助项目.
通讯联系人: 蒋夏军, 博士, 讲师, 研究方向: 领域时空数据库、计算机仿真. E-m ail:xiajun ja@ nu aa. edu. cn
更新日期/Last Update: 2013-04-24