DIF is a set of tools aimed at implementing a powerful indexing system
for astronomical catalogs and other data with spherical coordinates,
stored into
MySQL databases. DIF is able to use both
HTM and
HEALPix
pixelization schemas and it allows very fast query execution even on
billion-row tables.
DIF has been developed on the GNU/Linux platform and is released under
the
GPL license. This site contains all news, updates,
documentation and downloadable software packages. The site is still
under development, so check for updates.