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Re: cardinality of properties for Assertion

From: Shadi Abou-Zahra <shadi@w3.org>
Date: Thu, 01 Dec 2005 16:51:38 +0100
Message-ID: <438F1C0A.7030002@w3.org>
To: Johannes Koch <johannes.koch@fit.fraunhofer.de>
Cc: public-wai-ert@w3.org

Btw, just now I see that in your subject line you are specifically asking about the assertor class, while in the message body you seem to be talking more generically...


Shadi Abou-Zahra wrote:
> 
> Hi Johannes,
> 
> Yes, in most cases we only defined minimum cardinality (sometimes even 
> redundantly of 0) but decided not to put maximum cardinalities *yet*. 
> Once we have a stable schema, we can choose to tune the model and 
> tighten the restrictions.
> 
> By the way, we do have some maximum restrictions. For example, there can 
> only be *exactly one* date property per test subject class.
> 
> Do you have any comments or suggestions to this?
> 
> Best,
>  Shadi
> 
> 
> Johannes Koch wrote:
> 
>>
>> Hi list,
>>
>> the schema in the 20050711 WD contains information on the minimum 
>> cardinality of properties for classes. There is no information about 
>> the maximum cardinality. So I assume that it is unlimited. Is that 
>> right? Or are there properties that should only appear once?
> 
> 
> 

-- 
Shadi Abou-Zahra,     Web Accessibility Specialist for Europe 
Chair and Team Contact for the Evaluation and Repair Tools WG 
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WAI-TIES Project,                 http://www.w3.org/WAI/TIES/ 
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Received on Thursday, 1 December 2005 15:51:57 GMT

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