Dissemination of heterogeneous XML data in publish/subscibe systems

13 years 11 months ago

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The publish-subscribe paradigm is an eﬀective approach for data publishers to asynchronously disseminate relevant data to a large number of data subscribers. A lot of recent research has focused on extending this paradigm to support content-based delivery of XML data using more expressive XML-based subscription speciﬁcations that allow constraints on both data contents as well as structure. 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. In this paper, we examine the options to resolve this schema heterogeneity problem in XML data dissemination, and propose a novel paradigm that is based on data rewriting. Our experimental results demonstrate the eﬀectiveness of the data rewriting paradigm and id...

Yuan Ni, Chee Yong Chan

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