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RE: dynamically generated XML Schema?! Re: R: [xml-d

• To: 'Jeff Greif' <jgreif@a...>
• Subject: RE: dynamically generated XML Schema?! Re: R: Number of active public XML schemas
• From: "Bullard, Claude L (Len)" <len.bullard@i...>
• Date: Wed, 3 Nov 2004 09:46:39 -0600
• Cc: xml-dev@l...

If I already have a database with the metadata in it needed to 
generate an application, why would I need a schema too?  
That I might need (likely will need) multiple tables to do that isn't 
that big a deal.

I might need a schema when I want to expose the 
constraints and metadata to an external user(s) (eg, doesn't 
want to consume my database tables).  If there is a 
dynamic aspect to the transaction that I need to 
communicate, then dynamically generating a schema 
is a good idea particularly if it only governs 
a limited set of instances or just one.

OTW, a property bag is a property bag is a property bag.

len

From: Jeff Greif [mailto:jgreif@a...]
Sent: Wednesday, November 03, 2004 9:35 AM

>> Why generate schemas dynamically?  What's the advantage of an XML
>> Schema language for this?

Consider an application that consumes schemas, say, to generate forms for
user input.  (Based on a type in a schema, it generates a form.).  Sometimes
the type can be specialized to make things easier for the human entering the
data, or for validation of the result.

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