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Re: schema: different occurence types

From: ht@---.--.--.-- (----- -. --------)
To: NULL
Date: 9/1/2005 10:54:00 AM

Sure -- add a 'fixed' attribute called 'root' with value 'root' to the
<users> element, then define a <key>, which establishes id as a key
for user under users, and define a <keyref>, which identifies
root/@root as a reference to the 'id' key.

See the Identity Constraint chapter of the W3C XML Schema Primer [1] for
help with this.

ht

[1] http://www.w3.org/TR/xmlschema-0/#specifyingKeysAndtheirRefs
-- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@i...
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]

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Re: schema: different occurence types