Efficient filtering of XML documents with XPath expressions

Chan, Chee-Yong; Felber, Pascal; Garofalakis, Minos; Rastogi, Rajeev

doi:10.1007/s00778-002-0077-6

Cited by 179 publications

(194 citation statements)

References 11 publications

(1 reference statement)

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“…In XFrag [4] and XFPro [12], XML fragments can only be evaluated under simple, single queries. While other research work [6][7][8][9][10] consider problems on a stream of XML tuples, not XML fragments, and can not avoid "redundant" operations caused by fragments.…”

Section: Fig 1 An Xml Document and Its Dom Treementioning

confidence: 99%

“…Recently, many research works [4][5][6][7][8][9][10] focus on answering queries on streamed XML data, which has to be analyzed in real-time and by one pass. In the pushbased model [4,5], XML streams are broadcasted to multiple clients, which must evaluate continuous, sophisticated queries (as opposed to simple, single path specifications) with limited memory capacity and processing power.…”

Section: Introductionmentioning

confidence: 99%

“…In the pushbased model [4,5], XML streams are broadcasted to multiple clients, which must evaluate continuous, sophisticated queries (as opposed to simple, single path specifications) with limited memory capacity and processing power. In the pullbased model [6][7][8][9][10], such as publish-subscribe or event notification systems, XML streams are disseminated to subscribers, but a larger number of registered queries pose heavy workload on the server. Hence, expediting multiple queries on XML streams is the core technical challenge.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Evaluation of Multiple Queries on Streamed XML Fragments

Huo

Zhou

Wang

et al. 2006

Advances in Web-Age Information Management

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Abstract. With the prevalence of Web applications, expediting multiple queries over streaming XML has become a core challenge due to one-pass processing and limited resources. Recently proposed Hole-Filler model is low consuming for XML fragments transmission and evaluation, however existing work addressed the multiple query problem over XML tuple streams instead of XML fragment streams. By taking advantage of schema information for XML, this paper proposes a model of tid+ tree to construct multiple queries over XML fragments and to prune off duplicate and dependent operations. Based on tid+ tree, it then proposes a notion of FQ-Index as the core in M-XFPro to index both multiple queries and XML fragments for processing multiple XPath queries involving simple path and twig path patterns. We illustrate the effectiveness of the techniques developed with a detailed set of experiments.

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Section: Fig 1 An Xml Document and Its Dom Treementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient Evaluation of Multiple Queries on Streamed XML Fragments

Huo

Zhou

Wang

et al. 2006

Advances in Web-Age Information Management

View full text Add to dashboard Cite

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“…Such subscriptions are called tree patterns. Known prototype systems include XFilter [9], XTrie [10], WebFilter [11], etc.…”

Section: Related Workmentioning

confidence: 99%

An Ontology-Based Publish/Subscribe System

Wang

Jin

2004

Middleware 2004

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Abstract. Expressiveness and matching efficiency are two key design goals of publish/subscribe systems. In this paper, we introduce the Semantic Web technologies into the publish/subscribe system and propose an ontology-based publish/subscribe (OPS) system. The system can make use of the semantic of events to match events with subscriptions, and can support events with complex data structure (such as graph structure). An efficient matching algorithm is proposed for the OPS system, which can match events with subscriptions in a speed much higher than conventional graph matching algorithms. Therefore, the main contribution of our work is that it greatly improves the expressiveness of the publish/subscribe system without the sacrifice of matching efficiency.

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“…At first glance, one may consider that evaluating a set of XPath-based access control rules and a set of XPath queries over a streaming document are equivalent problems [DF03,GMO03,CFG02]. However, access control rules are not independent.…”

Section: Accurate Streaming Access Control Rules Evaluatormentioning

confidence: 99%

Client-Based Access Control Management for XML documents

Bouganim

Ngoc

Pelletier

2004

Proceedings 2004 VLDB Conference

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The erosion of trust put in traditional database servers and in Database Service Providers, the growing interest for different forms of data dissemination and the concern for protecting children from suspicious Internet content are different factors that lead to move the access control from servers to clients. Several encryption schemes can be used to serve this purpose but all suffer from a static way of sharing data. With the emergence of hardware and software security elements on client devices, more dynamic client-based access control schemes can be devised. This paper proposes an efficient client-based evaluator of access control rules for regulating access to XML documents. This evaluator takes benefit from a dedicated index to quickly converge towards the authorized parts of apotentially streaming -document. Additional security mecanisms guarantee that prohibited data can never be disclosed during the processing and that the input document is protected from any form of tampering. Experiments on synthetic and real datasets demonstrate the effectiveness of the approach.

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Efficient filtering of XML documents with XPath expressions

Abstract: We propose a novel index structure, termed XTrie

Cited by 179 publications

References 11 publications

Efficient Evaluation of Multiple Queries on Streamed XML Fragments

Efficient Evaluation of Multiple Queries on Streamed XML Fragments

An Ontology-Based Publish/Subscribe System

Client-Based Access Control Management for XML documents

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