• To: xml-dev@l...
• Subject: Re: Restrictions on existence of attributes?
• From: Rick Jelliffe <rjelliffe@a...>
• Date: Thu, 06 Jul 2006 18:24:54 +1000
• In-reply-to: <008701c6a0d3$3652af90$6401a8c0@turtle>
• References: <008701c6a0d3$3652af90$6401a8c0@turtle>
• User-agent: Thunderbird 1.5.0.2 (X11/20060420)

Good point. Its not just value space and lexical space that is 
type-checked in XSD but also derivation tree. So a mechanism like the 
one Eric suggests would be necessary to simulate that.

Cheers
Rick


Michael Kay wrote:
>> a toolmaker could easily make a system that checks whether one 
>> RELAX NG schema is a restricted or xsd-style extension of 
>> another. 
>>     
>
> I disagree. Just because month has the value-set 1..12 and percentage has
> the value-set 1..100 does not mean that month is a subtype of percentage.
> Subtyping is a semantic relationship, not merely a syntactic one.
>
> Michael Kay
> http://www.saxonica.com/
>
>
>   

• References:
  • RE: Restrictions on existence of attributes?
    • From: "Michael Kay" <mike@s...>

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