NDLI: XML query-update independence analysis revisited

Content Provider	ACM Digital Library
Author	Genevès, Pierre Layaïda, Nabil Junedi, Muhammad
Abstract	XML transformations can be resource-costly in particular when applied to very large XML documents and document sets. Those transformations usually involve lots of XPath queries and may not need to be entirely re-executed following an update of the input document. In this context, a given query is said to be independent of a given update if, for any XML document, the results of the query are not affected by the update. We revisit Benedikt and Cheney's framework for query-update independence analysis and show that performance can be drastically enhanced, contradicting their initial claims. The essence of our approach and results resides in the use of an appropriate logic, to which queries and updates are both succinctly translated. Compared to previous approaches, ours is more expressive from a theoretical point of view, equally accurate, and more efficient in practice. We illustrate this through practical experiments and comparative figures.
Starting Page	95
Ending Page	98
Page Count	4
File Format	PDF
ISBN	9781450311168
DOI	10.1145/2361354.2361375
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2012-09-04
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Query Xml Independence Update
Content Type	Text
Resource Type	Article

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XML query-update independence analysis revisited