[mapguide-dev] Metadata

[Trevor Wekel]

Hi Paul,

Yes.  You are correct.  The metadata system is intended to store a
free-form XML blob for a specific resource.  Resource content documents
are similar.  Each resource does have a specific XML schema but as far
as the ResourceService is concerned, they are just valid XML blobs.

Thanks,
Trevor 

-----Original Message-----
From: Paul Spencer (External) 
Sent: Monday, September 18, 2006 3:13 PM
To: dev at mapguide.osgeo.org
Subject: Re: [mapguide-dev] Metadata

Jason,

I suspect that the metadata system they are putting in is more in the
line of free-form storage system associated with a resource rather than
a structured metadata standard (FGDC?) which you seem to think this is.
I could be wrong :)

For instance, the description of the MapDefinition that you enter in
Studio is stored in a metadata tag inside the actual XML representation
of the MapDefinition.

I think you raise an excellent point, though.  It could be very
compelling to have a real metadata capability inside MapGuide.

Cheers

Paul

On 18-Sep-06, at 4:17 PM, Jason Birch wrote:

> Hi all,
>
> I am concerned that by just storing Metadata as an XML chunk against 
> resources, that it will be extremely difficult to manage on an 
> enterprise level.  I may just be getting worked up about something 
> that has already been considered but...
>
> A good metadata system should store at least organisation and contact 
> information independently, taking advantage of a relational model and 
> making maintenance easier.  Meta information stored against data sets 
> should be composited on the fly into the required metadata standard.
>
> As well, metadata should not be limited to the information stored 
> directly in MapGuide.  It should be possible to store metadata for 
> external resources, including those referred to in load procedures.  
> The metadata for the resultant data would then reference the source 
> they were derived from.
>
> Hmm.  On the flip side, there should at least be the ability to parse 
> and load XML metadata in standard formats, such as generated by 
> ArcGIS.
>
> Jason
>
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|Paul Spencer                           pspencer at dmsolutions.ca   |
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|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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