Incremental Maintenance for Materialized Views over Semistructured Data.
Serge Abiteboul, Jason McHugh, Michael Rys, Vasilis Vassalos, Janet L. Wiener:
Incremental Maintenance for Materialized Views over Semistructured Data.
VLDB 1998: 38-49@inproceedings{DBLP:conf/vldb/AbiteboulMRVW98,
author = {Serge Abiteboul and
Jason McHugh and
Michael Rys and
Vasilis Vassalos and
Janet L. Wiener},
editor = {Ashish Gupta and
Oded Shmueli and
Jennifer Widom},
title = {Incremental Maintenance for Materialized Views over Semistructured
Data},
booktitle = {VLDB'98, Proceedings of 24rd International Conference on Very
Large Data Bases, August 24-27, 1998, New York City, New York,
USA},
publisher = {Morgan Kaufmann},
year = {1998},
isbn = {1-55860-566-5},
pages = {38-49},
ee = {db/conf/vldb/AbiteboulMRVW98.html},
crossref = {DBLP:conf/vldb/98},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
Abstract
Semistructured data is not strictly typed like relational or object-oriented data and may be irregular or incomplete.
It often arises in practice, e.g., when heterogeneous data sources are integrated or data is taken from the World Wide Web.
Views over semistructured data can be used to filter the data and to restructure (or provide structure to) it.
To achieve fast query response time, these views are often materialized.
This paper proposes an incremental maintenance algorithm for materialized views over semistructured data.
We use the graph-based data model OEM and the query language Lorel, developed at Stanford, as the framework for our work.
Our algorithm produces a set of queries that compute the updates to the view based upon an update of the source.
We develop an analytic cost model and compare the cost of executing our incremental maintenance algorithm to that of recomputing the view.
We show that for nearly all types of database updates, it is more efficient to apply our incremental maintenance algorithm to the view than to recompute the view from the database, even when there are thousands of updates.
Copyright © 1998 by the VLDB Endowment.
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Online Paper
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Printed Edition
Ashish Gupta, Oded Shmueli, Jennifer Widom (Eds.):
VLDB'98, Proceedings of 24rd International Conference on Very Large Data Bases, August 24-27, 1998, New York City, New York, USA.
Morgan Kaufmann 1998, ISBN 1-55860-566-5
Contents 
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Copyright © Tue Mar 16 02:22:07 2010
by Michael Ley (ley@uni-trier.de)
