Schema adaptation under multi-relation dependencies

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	Schema adaptation under multi-relation dependencies
	Zhou, MH; Liao, HM; Li, F
刊名	GRID AND COOPERATIVE COMPUTING - GCC 2005, PROCEEDINGS
	2005
卷号	3795 页码:511-516
ISSN号	0302-9743
英文摘要	In information grid, data sources not only change their data, but also change their schema. On schema changing, the mapping may be left inconsistency. Thus, it is an essential issue to detect and update the inconsistency. We present a novel approach for adapting mappings as schema evolves. We propose a new kind of dependencies, called multi-relation dependencies. Multi-relation dependencies specify the dependent relationship between attributes across relations under a join condition. By the soundness and completeness of reasoning rules of multi-relation dependencies, our approach detects the minimal part of mapping which are inconsistent. And the algorithm adapts mappings on both local schema and global schema changing. Most current approaches do not distinguish the removal of key attributes from non-key attributes. Our study shows that removal of these two kinds of attributes results in different adaptations.
WOS研究方向	Computer Science
语种	英语
出版者	SPRINGER-VERLAG BERLIN
WOS记录号	WOS:000234857700064
内容类型	期刊论文
源URL	[http://119.78.100.204/handle/2XEOYT63/10072]
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhou, MH
作者单位	Chinese Acad Sci, Comp Technol Inst, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Zhou, MH,Liao, HM,Li, F. Schema adaptation under multi-relation dependencies[J]. GRID AND COOPERATIVE COMPUTING - GCC 2005, PROCEEDINGS,2005,3795:511-516.
APA	Zhou, MH,Liao, HM,&Li, F.(2005).Schema adaptation under multi-relation dependencies.GRID AND COOPERATIVE COMPUTING - GCC 2005, PROCEEDINGS,3795,511-516.
MLA	Zhou, MH,et al."Schema adaptation under multi-relation dependencies".GRID AND COOPERATIVE COMPUTING - GCC 2005, PROCEEDINGS 3795(2005):511-516.