XSchema Question 5: Root element issues

[Simon St.Laurent]

We'll start the XSchema document syntax discussion at the top, with the root 
element. Hopefully this piece will be a nice appetizer and we can proceed to 
its subelements and attributes, the main course.

>From the Goals:
--------------------
1. XSchema documents shall use XML document syntax, using element nesting and 
attributes to describe all constraints that may be verified by a processor 
using XSchema. 
--------------------

In XML documents, per 2.1 of the XML specification:
--------------------
There is exactly one element, called the root, or document element, no part of 
which appears in the content of any other element.  
--------------------

XSchema documents, in order to be XML documents, must have a single root 
element, which may be preceded by the prolog, PIs, and perhaps comments and 
XML 1.0 DTD information.

An XSchema document might begin:
<?xml version='1.0' ?>
<?xml:namespace ns='http://tobedetermined.com' prefix='XSC' ?>
<XSC:XSchema>
...
</XSC:XSchema>

Do we want to provide additional information in this root element regarding 
XSchema version, for instance? 

We could add "version='0.1'" or something.

Given that we're discussing verifying fragments, it's mildly ironic to be 
requiring a root element.  Any concerns on that issue?

Most important, am I forgetting anything critical?

Simon St.Laurent
Dynamic HTML: A Primer / XML: A Primer / Cookies


xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo at ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)