This article is from the Scientific Data Format Information FAQ, by Ilana Stern ilana@kiowa.scd.ucar.edu with numerous contributions by others.
HDS (Hierarchical Data System) is a freely available database system.
It is particularly suited to the storage of large multi-dimensional arrays
(with their ancillary data) where efficiency of access is a requirement.
It is presently used in astronomy, for storing (in particular) images,
spectra and time series.
Documentation, and information on obtaining the source code, is
available at <URL:http://star-www.rl.ac.uk/> or in a LaTex document at
<URL:ftp://starlink-ftp.rl.ac.uk/pub/doc/star-docs/sun92.tex>.
 
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