Mapping publishing and mapping adaptation in the middleware of railway information grid system | |
You, GM; Liao, HM; Sun, YZ | |
刊名 | NETWORK AND PARALLEL COMPUTING, PROCEEDINGS
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2004 | |
卷号 | 3222页码:110-117 |
ISSN号 | 0302-9743 |
英文摘要 | When adopting the mediator architecture to integrate distributed, autonomous, relational model based database sources, mappings from the source schema to the global schema may become inconsistent when the relational source schema or the global schema evolves. Without mapping adaptation, users may access no data or wrong data. In the paper, we propose a novel approach the global attribute as view with constraints (GAAVC) to publish mappings, which is adaptive for the schema evolution. Also published mappings satisfy both source schema constraints and global schema constraints, which enable users to get valid data. We also put forward the GAAVC based mapping publishing algorithm and mapping adaptation algorithms. When we compare our approach with others in functionality, it outperforms. Finally the mapping adaptation tool GMPMA is introduced, which has been implemented in the middleware of railway information grid system. |
WOS研究方向 | Computer Science |
语种 | 英语 |
出版者 | SPRINGER-VERLAG BERLIN |
WOS记录号 | WOS:000224583100013 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.204/handle/2XEOYT63/13949] ![]() |
专题 | 中国科学院计算技术研究所期刊论文_英文 |
通讯作者 | You, GM |
作者单位 | Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China |
推荐引用方式 GB/T 7714 | You, GM,Liao, HM,Sun, YZ. Mapping publishing and mapping adaptation in the middleware of railway information grid system[J]. NETWORK AND PARALLEL COMPUTING, PROCEEDINGS,2004,3222:110-117. |
APA | You, GM,Liao, HM,&Sun, YZ.(2004).Mapping publishing and mapping adaptation in the middleware of railway information grid system.NETWORK AND PARALLEL COMPUTING, PROCEEDINGS,3222,110-117. |
MLA | You, GM,et al."Mapping publishing and mapping adaptation in the middleware of railway information grid system".NETWORK AND PARALLEL COMPUTING, PROCEEDINGS 3222(2004):110-117. |
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