[Odrl-version2] resumption of containers & model update

[Susanne Guth]

Hi Renato,

I agree, we have to make this clear:

What about distinguishing the following cases:

Case 1.) Either permissions OR (exclusive) prohibitions are allowed: In this
world we can follow our former spec, saying 

 "Permissions are what you are allowed to perform on the target **and
nothing else**"

 "Prohibitions are what you are NOT allowed to perform on the target **but
everything else** is allowed."

Case 2.) Permissions AND Prohibitions are allowed: In this world we could
state:

 "Permissions are what you are allowed to perform on the target **and
nothing else**"

 "Prohibitions are what you are explicitly NOT allowed to perform on the
target **and anything else is still not allowed."

With this second case, we could cover the CC licenses, I think. Don't we?

+++++++++++++++

With this, we treat Prohibitions under certain conditions differently. Is
that problematic? Vicky? If we run into troubles, then I would suggest to
only go with solution/case 2.

So long
Susanne


> 
> Thanks Susi - I like the update!
> 
> > 2.) I kept prohibitions as they were. However, this issue need further
> > discussion. The important question is if we can formalise the model  
> > with
> > prohibitions in it... vicky I count on you here :)
> 
> We also need to be able to express the semantics of Permissions/ 
> Prohibitions in the
> (less formal) Model. In particular, the conflict that arises when  
> both are used in
> a single expression (or expressions that are merged/inherited...)
> 
> In the current V2 Model, we only say that Permissions are what you  
> are allowed to
> perform on the Target, and Prohibitions what you are not.
> 
> Remember in V1.1 we said that Permissions are what you are allowed to  
> perform on
> the target **and nothing else** - that last bit is the important  
> difference.
> 
> a) Consider the following:
>   Permission = Display
>   Prohibition = Print
> 
> The person can display the target but not print it.
> 
> What about editing? It certainly does not say I can't do it.
> But it does not say that I can either.
> 
> 
> How can we define the semantics of Permissions/Prohibitions so that  
> when they
> both appear, it is clear what they both mean?
> 
> Perhaps we need a way to indicate if they represent a "closed set" of  
> actions?
> 
> Cheers...  Renato
> 
> 
> _______________________________________________
> ODRL-Version2 mailing list
> ODRL-Version2 at odrl.net
> http://lists.odrl.net/mailman/listinfo/odrl-version2
> 

-- 
Susanne Guth
susanne at odrl.net
ODRL Initiative
http://odrl.net/

10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail
+++ GMX - die erste Adresse für Mail, Message, More +++