Efficiency and Effectiveness of XML Tools and Techniques and by Dare Obasanjo, Shamkant B. Navathe (auth.), Stéphane

By Dare Obasanjo, Shamkant B. Navathe (auth.), Stéphane Bressan, Mong Li Lee, Akmal B. Chaudhri, Jeffrey Xu Yu, Zoé Lacroix (eds.)

This publication constitutes the completely refereed joint post-proceedings of the VLDB 2002 Workshop on potency and Effectiveness of XML instruments and methods, EEXTT and the CAiSE 2002 Workshop on information Integration over the internet, DIWeb.

The 10 revised complete papers awarded have been conscientiously chosen in the course of rounds of reviewing and revision. The papers are geared up in topical sections on XML languages, XML modeling and integration, XML garage, benchmarking XML, and information integration over the Web.

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Additional resources for Efficiency and Effectiveness of XML Tools and Techniques and Data Integration over the Web: VLDB 2002 Workshop EEXTT and CAiSE 2002 Workshop DIWeb Revised Papers

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E. swaps and unbalances) and the total number of hierarchy-related pairs in the data tree that also appear in the embedding: p γ4 = 1 − e˜ hpd Cohesion of Results. It represents the grade of fragmentation of the resulting embedding. It is computed as the complement of the ratio between the number of intermediate data nodes ined˜ and the total number of data nodes in the embedding, also including the intermediate ones ned˜ : γ5 = 1 − ined˜ ned˜ These properties can be naturally partitioned in two sets: properties related to semantics, and properties concerning structure.

Org/TR/2000/REC-xml-20001006. : XML Schema Part 1: Structures. 2 May 2001. org/TR/2001/REC-xmlschema-120010502/. : XML Information Set. 24 October 2001. org/TR/2001/REC-xml-infoset-20011024. : Namespaces in XML. 14 January 1999. org/TR/1999/REC-xml-names-19990114. 0 Data Model. 20 December 2001. org/TR/2001/WD-query-datamodel20011220/. Gray, J. ): The Benchmark Handbook. Morgan Kauffmann. 1993. 0 (XQueryX). 7 June 2001. org/TR/2001/WD-xqueryx-20010607. 21). 3 July 1998. htm. : Relax NG Specification.

Fig. 10 shows the performance on these queries. 01 P1 P2 P5 P6 P7 P8-1 P8-2 P9-3 P10 P11-1 P11-2 P12-1 P13 P15 P18 P20-1 P20-2 P20-3 Fig. 9. 10 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Fig. 10. Performance of Shakes while Q3, Q4 and Q6 are complex paths with path branches or ”—” operators, so AM outperforms DOM and EJ on these queries. There are little difference between DOM, EJ and AM on Q7 and Q8. This is because these two queries all have predicates, while all the three approaches need access database to filtering elements.

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