[CATALOGUE]Starting Data Model Subgroup
mjg at cacr.caltech.edu
Mon Jul 26 12:32:16 PDT 2004
> A catalogue is not a table, generally speaking. It can be expressed
> as a table or as a set of many tables, but that is not the point.
> A catalogue is a set of derived data: derived from imaging, spectral,
> event lists, time series, interferometric, or other types of data.
> The data model must describe not only the structure of the "table",
> including attributes and values, but also inheritance, provenance,
> semantics, error columns, and more (units, formats, column-column
> relationships, table-table relationships).
This really just sounds like defining the VOTable superclass. If there is
more to it than that might I suggest changing the name of this DM from
Catalogue to Derived Data Set or something similar because when I think of
a catalogue, I think of a tabulated structure, be it for books in my local
library or lingerie from Victoria's Secret.
More information about the dm