The VizieR system, a unified interface to astronomical catalogs.

Details The VizieR system, a unified interface to astronomical catalogs. The VizieR system, a unified interface to astronomical catalogs.

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999fgst...16...39o&link_type=abstract

Future Gener. Comput. Syst. (Netherlands), Vol. 16, No. 1, p. 39 - 48

Astronomy and Astrophysics

Astronomy

Data Bases: Astronomy, Data Bases: Catalogues

Scientific paper

The authors present some aspects of the VizieR service, as an example of a database connecting to the largest set of astronomical catalogs. They especially emphasize the role of the metadata: how these are acquired from the descriptions, and how they are stored in the system. The specification of relations or links between data are an important part of the metadata, and the authors use GLU (Generateur de Liens Uniformes = uniform link generator) expressions to describe the links to external databases or services. The basic principles of the GLU system initiated at CDS, as well as some tools based on the GLU protocol, are briefly described. Finally, the on-going developments, especially related to data mining purposes, are presented.

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