COMA - A system for flexible combination of Schema Matching Approaches

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COMA - A system for flexible combination of Schema Matching Approaches (2002)

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by Hong-hai Do , Erhard Rahm

Venue:	In VLDB
Citations:	443 - 12 self

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@INPROCEEDINGS{Do02coma-,
    author = {Hong-hai Do and Erhard Rahm},
    title = {COMA - A system for flexible combination of Schema Matching Approaches},
    booktitle = {In VLDB},
    year = {2002},
    pages = {610--621}
}

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Abstract

Schema matching is the task of finding semantic correspondences between elements of two schemas. It is needed in many database applications, such as integration of web data sources, data warehouse loading and XML message mapping. To reduce the amount of user effort as much as possible, automatic approaches combining several match techniques are required. While such match approaches have found considerable interest recently, the problem of how to best combine different match algorithms still requires further work. We have thus developed the COMA schema matching system as a platform to combine multiple matchers in a flexible way. We provide a large spectrum of individual matchers, in particular a novel approach aiming at reusing results from previous match operations, and several mechanisms to combine the results of matcher executions. We use COMA as a framework to com- prehensively evaluate the effectiveness of different matchers and their combinations for real-world sche- mas. The results obtained so far show the superiority of combined match approaches and indicate the high value of reuse-oriented strategies.

Keyphrases

schema matching approach flexible combination coma schema reuse-oriented strategy matcher execution different matcher combined match approach user effort novel approach web data source several match technique xml message mapping combine different match algorithm multiple matcher previous match operation match approach flexible way high value automatic approach individual matcher large spectrum real-world sche ma schema matching considerable interest several mechanism semantic correspondence many database application

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