[Odrl-version2] Core Model: relationship between Action and Duty

[Francis Cave]

Hi Renato

OK, then I do have a problem with this. I think that "an Action can have 
one Permission" is wrong. There could be several permissions with the 
same action but with different constraints. Or please explain how the 
Core Model will enable such multiple constraints to be expressed without 
needing to use extensions.

Regards,

Francis



ri at odrl.net wrote:

>On 9 Nov 2010, at 00:37, Francis Cave wrote:
>
>  
>
>>I'm trying to interpret the cardinalities ('1' and '1') at both ends of the associations between the Action entity and each of the Permission, Prohibition and Duty entities in Figure 2.1. I may simply be showing my ignorance of how to interpret UML diagrams. :o) I understand the '1' at the Action end of each association, but I don't understand the '1' at the other end in each case.
>>    
>>
>
>
>This means there is a "1 to 1" association between these entities.
>
>ie: A Permission can have one Action. An Action can have One Permission.
>
>(but, of course, you can have many Permissions per Policy)
>
>Cheers
>
>Renato Iannella
>ODRL Initiative
>http://odrl.net
>
>
>
>_______________________________________________
>Odrl-version2 mailing list
>Odrl-version2 at odrl.net
>http://odrl.net/mailman/listinfo/odrl-version2_odrl.net
>
>
>  
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://odrl.net/pipermail/odrl-version2_odrl.net/attachments/20101111/056dfcf8/attachment.html>