Federating Datasets with Spatial Joins

Details Federating Datasets with Spatial Joins Federating Datasets with Spatial Joins

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..314..189p&link_type=abstract

Astronomical Data Analysis Software and Systems (ADASS) XIII, Proceedings of the conference held 12-15 October, 2003 in Strasbou

Computer Science

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1

Scientific paper

Federating or combining astronomical datasets frequently leads to new discoveries, for example when cross-matching source catalogs. In database terms this requires a spatial join between tables. Two algorithms for spatial joins (pixel-code and R-tree join) were compared, and the performance of three DBMS (DB2, MySQL, and PostgreSQL) was evaluated using large source catalogs.

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