The Design of Multi-Index System on UCAC2 Catalog
Catalog is a celestial databank which records various parameters, such as location, motion, magnitude, and spectral type. UCAC2 (The Second U.S. Naval Observatory CCD Astrograph Catalog) is a high density, highly accurate, astrometric catalog of 48,330,571 stars. Currently the UCAC2 catalog can only be accessed by an index of ascension and declination. To facilitate the efficient multi-dimensional access to UCAC2, this paper proposed the detailed design and implementation of the multi-indexed catalog database. The newly established index system can provide efficient access in multiple entrance to the catalog.
Aimin Yang, Jingguo Qu and Xilong Qu
J. C. Pan et al., "The Design of Multi-Index System on UCAC2 Catalog", Applied Mechanics and Materials, Vols. 84-85, pp. 326-331, 2011