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Multi-constraint selection of materialized webviews

Published: 08 November 2010 Publication History

Abstract

In this paper, we propose a new constraint to select materialized webviews. The webview materialization is a term used to represent the transformation of dynamic web data into equivalent static web data. That is the creation of a static instance of a dynamic web page, at a certain point in time. Our new selection constraint consists of limiting the number of sources of materialized webviews. Our first aim is to reduce the update frequency of the materialized webview. This will decrease the access cost to the data sources which may be distant. Secondly, we aim to guarantee the stability of the profit and the materialization load of the materialization plan (the set of materialized webviews) during the selection period. That is we will reduce the probability of early violation of the selection constraints or early materialization loss of the selected plan. Our experiment results show that for small values of the source constraint, our approach can improve the average profit of materialization by more than 15%. Also, when the number of candidate webviews is high, the query response time is improved by applying our solution.

References

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Ben Ammar, A., Abdellatif, A. and Ben Ghezala, H. 2006. Forms of Data Materialization in Data-Intensive Web Sites. IJCSNS International Journal of Computer Science and Network Security, VOL. 6 84 No. 12, December 2006
[2]
Ben Ammar, A., Badis, M. and Abdellatif, A. 2010. Motifs Séquentiels pour la Sélection des Webiews à Matérialiser. In 6èmes Journées francophones sur les Entrepôts de Données et l'Analyse en ligne Djerba 11--13 Juin (2010).
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Challenger, J., Dantzig, P., Iyengar, A., and Witting, K. 2005. A fragment-based approach for efficiently creating dynamic web content. ACM Trans. Internet Techn, 2005.
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Challenger, J., Iyengar, A., Witting, Fersat K. C., and Reed, P. 2000. A publishing system for efficiently creating web content. In Proc. of IEEE INFOCOMŠ 2000, 2000.
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Christos, B., Agisilaos, K. 2002. Efficient Materialization Of Dynamic Web Data To Improve Web Performance. 15th International Conference on Computer Communication (ICCC 2002) Mumbai. India, August 11--14 2002.
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Labrinidis, A. and Roussopoulos, N. 2001. Adaptive webview materialization. In the Fourth International Workshop on the Web and Databases, held in conjunction with ACM SIGMOD, 2001.
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Labrinidis, A. and Roussopoulos, N. 1999. On the materialization of webviews. In Proc. of the ACM SIGMOD Workshop on the Web and Databases WebDB 99, pages 79--84, 1999.
[8]
Labrinidis, A. and Roussopoulos, N. 2002. Online View Selection for the Web. In Proc. Of the ACM SIGMOD Conference, 2002.
[9]
Labrinidis, A. and Roussopoulos, N. 2000. WebView Materialization. Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data. pp. 367--378. May 14--19, 2000, Dallas, Texas, United States
[10]
Saidi, S., Slimani, Y. and Arour, K. 2007. Webview selection from user access Patterns. In PIKM '07, November 9, 2007, Lisboa, Portugal. (2007).
[11]
TPC-W Java Implementation http://tpcw.deadpixel.de/

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iiWAS '10: Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
November 2010
895 pages
ISBN:9781450304214
DOI:10.1145/1967486
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 08 November 2010

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  1. maintenance constraint
  2. materialized webview
  3. multi-dimensional knapsack
  4. selection constraint

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