Re: [Moderator Action] Question about modelling

"Thomas F. Gundersen" <Thomas.Gundersen@fast.no> writes:

> How can I model the following relationship :
> 
> Element A must contain exactly one element B, can contain 0 to N element C,
> and
> can contain 0 or 1 of elements D, E and/or F. I do NOT want order to be
> significant.
> 
> For example, this should be legal :
> A
> 	B
> 	C
> 	D
> 	C
> 	E
> 	C
> 	C
> 
> or
> 
> A
> 	C
> 	C
> 	C
> 	B
> 	D
> 
> Is this even possible ?

No.  If you don't care about order, then fix an order and you'll be
fine.

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2001, part-time member of W3C Team
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	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
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