Please see the slides presenting IVOA's approach to "Data Integration" issues. http://complexity.ucs.indiana.edu/~asayar/proposal/IVOA_DataIntegIssues.ppt
The goal of the IVOA (International Virtual Observatory Alliance) is the development of architectural decisions and standards in the astronomy domain
IVOA is not directly addressing the data integration issues, but they plan to define VOStore and VOSpace based on SRB and/or NGAS architectures. IVOA has a prototype application for the data integration, OpenSkyQuery. OpenSkyQuery is VO prototype application that marries Web Services technology with emerging VO standards to enable dynamic cross-matching queries between different VO-enabled archives. In my presentation, I tried to explain basically OpenSkyQuery and related IVOA standards and specifications.
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