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	Metadata-based evaluation mechanism of equivalence between relational schemas
	Ding Feng ; Yang Wen-jun ; Xu Peng ; Wang Ke-hong
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical/ distributed processing document handling electronic data interchange meta data relational databases XML/ metadata-based evaluation mechanism XML data semantic distributed heterogeneous data World Wide Web data exchange semantic based equivalence relational schema descriptor DTD/ C6160D Relational databases C6130D Document processing techniques C6130E Data interchange C6150N Distributed systems software
中文摘要	XML plays a role of bridge for publishing and sharing data on the Web because of its feature of enabling present the semantic of data. So, it is possible to exchange and interfuse distributed heterogeneous data conveniently by means of Web and XML. In this paper, we propose that the first and most important step of exchanging and interfusing data of different relational schema is evaluating the semantic based equivalence of them. We also present a set of definitions about equivalence between relational schemas, as well as its features (reflexivity, transitivity, symmetry). We define relational schema descriptor (RSD), which is a XML-based metadata in XML, and its DTD. At last, we propose and implement the algorithm. Based on the mechanism, we convert and compare between relational schemas into the compare between RSDs.
语种	中文 ; 中文
出版者	Mini-Micro Syst., China ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/10331]
专题	清华大学
推荐引用方式 GB/T 7714	Ding Feng,Yang Wen-jun,Xu Peng,et al. Metadata-based evaluation mechanism of equivalence between relational schemas[J],2010, 2010.
APA	Ding Feng,Yang Wen-jun,Xu Peng,&Wang Ke-hong.(2010).Metadata-based evaluation mechanism of equivalence between relational schemas..
MLA	Ding Feng,et al."Metadata-based evaluation mechanism of equivalence between relational schemas".(2010).

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