Galaxy: Encouraging Data Sharing Among Sources with
Schema Variants
December 2007
Len Seligman, The MITRE Corporation
Peter Mork, The MITRE Corporation
Michael Morse, The MITRE Corporation
Arnon Rosenthal, The MITRE Corporation
Chris Wolf, The MITRE Corporation
Jeff Hoyt, The MITRE Corporation
ABSTRACT
This demonstration presents Galaxy, a schema manager that facilitates
easy and correct data sharing among autonomous but
related, evolving data sources. Galaxy reduces heterogeneity by
helping database developers identify, reuse, customize, and advertise
related schema components. The central idea is that as schemata
are customized, Galaxy maintains a derivation graph, and
exploits it for matching, data exchange, discovery, and multidatabase
query over the "galaxy" of related data sources. Using a
set of schemata from the biomedical domain, we demonstrate how
Galaxy facilitates schema and data sharing.
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