Data and services

[Robert Hanisch]

> Can I suggest some naming rules (bit rich since I'm not an astronomer) to
> avoid confusion.
>
>
> Everything referred to by a registry entry is a resource, uniquely and
> globally identified by a ResourceId.
>
> A service is anything which is invocable, ie is a web service with
callable
> methods.
>
> A data collection is any set of data which can be queried.
>
> A sky service is a service which provides access to a data collection.
I would prefer to not use "sky service" -- not all of astronomy is about the
sky.  (Really!)  For example, we would want collections of spectral line
identifications, oscillator strengths, etc., available as VO resources as
well.  I think the term "data service" is logically more consistent.

> A dataset is any addressable part of a data collection. Access to the
> dataset is via the sky service of the data collection.

Bob