schemas

[Tony Linde]

Hi Ray and all,

(warning: largish attachments)

I've had a crack at changing schema v0.8.1 as attached (*-v0.8.2tl.xsd and
sample jpg's).

1. I moved Service and related entities to the base VOResource schema; I
think they're better derived from there.

2. I added simple Registry and Authority elements derived from Service and
Resource respectively. Registry has a repeating ManagedAuthority group.
Resource has an optional ManagingOrg group. I'm sure there'll be more to be
added.

3. I created a RelatedResource which I added to the base ResourceType to
allow for the creation of relationships with other resources. This takes an
enumerated Relationship element defining the type of relationship and a
pointer to the related resource. This should probably go in a separate file
for ease of extension.

Have a look and see what you think. I'm sure it could all be better
implemented but I just wanted to get the general idea of the changes I
thought needed across.

Cheers,
Tony. 

__
Tony Linde                       Phone:  +44 (0)116 223 1292
AstroGrid Project Manager        Fax:    +44 (0)116 252 3311
Dept of Physics & Astronomy      Mobile: +44 (0)7753 603356
University of Leicester          Email:  ael at star.le.ac.uk
Leicester, UK   LE1 7RH          Web:    http://www.astrogrid.org
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