Automatically assigned DDC number: 00574

Manually assigned DDC number: 00574

Number of references: 29

Title: Incremental Maintenance for Materialized Views over Semistructured Data

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Subject: Serge Abiteboul,Jason Mchugh,Michael Rys,Vasilis Vassalos,Janet L. Wiener Incremental Maintenance for Materialized Views over Semistructured Data

Description: 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 incre...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1998-12-07

Pubyear: 1998

Format: ps

Identifier: http://citeseer.ist.psu.edu/22778.html

Source: http://www-db.stanford.edu/pub/papers/incr-oemviews.ps

Language: en

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