Introduction ...

• The people : Nikita Soldatov, Adam Kisiel, myself, …

• Why do we need a FileCatalog ??

• Number of files in STAR is ~ 2 M (will get worst, far worst …)

• Information structure complex ... production, library filetype, size, geometry collision, magnetic field, trigger setup name ... but we (are supposed to) keep information about triggers and counters, finding a data-set requires strong Cataloguing

• API

• One existing complete user API (written in perl), some C a command line interface % get_file_list.pl

Notes: