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Type-based detection of XML query-update independence

Abstract : In the last decade XML became one of the main standards for data storage and exchange on the Web. Detecting XML query-update independence is crucial to efficiently perform data management tasks, like those concerning view-maintenance, concurrency control, and security. This thesis presents a novel static analysis technique to detect XML query-update independence, in the presence of a schema. Rather than types, the presented system infers chains of types. Each chain represents a path that can be traversed on a valid document during query/update evaluation. The resulting independence analysis is precise, although it raises a challenging issue: recursive schemas may lead to infer infinitely many chains. This thesis presents a sound and complete approximation technique ensuring a finite analysis in any case, together with an efficient implementation performing the chain-based analysis in polynomial space and time.
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Submitted on : Thursday, January 24, 2013 - 10:07:11 AM
Last modification on : Sunday, June 26, 2022 - 11:58:02 AM
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  • HAL Id : tel-00780488, version 1



Federico Ulliana. Type-based detection of XML query-update independence. Other [cs.OH]. Université Paris Sud - Paris XI, 2012. English. ⟨NNT : 2012PA112339⟩. ⟨tel-00780488⟩



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