Resource & Service Metadata concepts doc

[Robert Hanisch]

Inspired by the recent active discussion about registries, and with
Francoise's notes about our October discussion of resource metadata, I have
finally updated the concepts document.  I added a list of revisions,
reproduced here:

Changes from V5
 ·    Added Date element, following Dublin Core and in response to October
2002 discussion.
·    Added Version element, in response to October 2002 discussion.  Not in
Dublin Core.
·    Added Creator.Logo element, in response to October 2002 discussion.
Not Dublin Core.
·    Added Subject element, to replace Coverage.Topics, as the former is
Dublin Core, the latter is not, and the intent is basically the same.
·    Added ContentLevel element, to replace Coverage.Level.  Upon reflection
I thought that ContentLevel was both a better label and was of a different
nature than the other Coverage elements.  M. Voit will provide further
inputs on appropriate element values.
·    Updated example to use new metadata elements.

The document is currently available at

    http://www.stsci.edu/~hanisch/NVO/ResourceServiceMetadataV6.doc
or
    http://www.stsci.edu/~hanisch/NVO/ResourceServiceMetadataV6.pdf

Cheers,
Bob