----- Original Message -----
From: Brett McLaughlin <[EMAIL PROTECTED]>
To: Turbine <[EMAIL PROTECTED]>
Sent: Saturday, January 08, 2000 6:16 PM
Subject: Re: OPaL: DTD for ClassMap(s)
>
>
<snip>
> Your work is appreciated, but why bother with a DTD? I would prefer to
> use an XML Schema, as to not be outdated within 6 months. DTDs are
> going away for application developers...
>
I guess i've fallen behind on my knowledge of XML, i do not know what an XML
Schema is. I'm going to read through this doc
http://www.w3.org/TR/xmlschema-1/ then i'll reply to this issue.
> In addition, I think we should define sample documents first... it is
> hard to create constraints when no one has formulated a good variety of
> data that should be constrained. I think we should set up some
> element/attribute names and ideas, and develop some XML instance
> documents. Only then do I feel we are ready to apply constraints to
> that data.
>
Any RDBMS schema will do... and i'm sure there are plenty to choose from.
> I vote we create XML data classmaps, and evaluate those, before committing
to a schema for >constraining those maps.
-1 the struture of mapping a object's attributes to a table columns is
static, look at the ClassMap class hierarchy in the design, all we need to
do is model this in XML hence the DTD.
-scott-
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