Answering XML Queries on Heterogeneous Data Sources
Proceedings of the 27th International Conference on Very Large Data Bases
Efficient filtering of XML documents with XPath expressions
The VLDB Journal — The International Journal on Very Large Data Bases
Towards an internet-scale XML dissemination service
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
Dissemination of heterogeneous XML data in publish/subscibe systems
Proceedings of the 18th ACM conference on Information and knowledge management
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A lot of recent research has focused on the content-based dissemination of XML data. However, due to the heterogeneous data schemas used by different data publishers even for data in the same domain, an important challenge is how to efficiently and effectively disseminate relevant data to subscribers whose subscriptions might be specified based on schemas that are different from those used by the data publishers. This paper examines the options to resolve this schema heterogeneity problem in XML data dissemination, and proposes a novel paradigm that is based on data rewriting. Our experimental results demonstrate the effectiveness of the data rewriting paradigm and identifies the tradeoffs of the various approaches