Re: [ebxml-bp] ActionItem: Potential Expressive Shortcomings in Roleinformation within current BPSS approach

["Anders W. Tell" <anderst@toolsmiths.se>]

Dale Moberg wrote:

>
>   BPSS and Business Process Role
>
>
>       Polyadicity
>
> Polyadicity is the property of how many relata are in a relation. The 
> current treatment of business process deals with only abstracted 
> business relations. For example, in a concrete selling relation such 
> as “selling,” there are typically more kinds of things being related 
> than just a buyer and a seller. There is a product or service being 
> purchased and there is some arrangement made for something to be 
> received in exchange for the product or service (a payment, for 
> example). [Otherwise we might have a hard time distinguishing 
> “selling” from “giving”.] UMM inspired business process models so far 
> do not capture cleanly these richer business process relational 
> descriptions, but that is not necessarily a shortcoming.
>

Im not sure I follow you here. UMM is in fact one of few electronic 
collaboration frameworks outside research labs that actually *in* the 
framework has support for business semantics such as selling and giving, 
its simple REA. Selling - money for goods, Giving - only money or goods 
in one direction.
In most other frameworks the business come into play by *usage* of the 
framework.


>       Cardinality
>
> Finally, and less critically, there is at present no indication of how 
> many occupants there are for a role, or that occupants are entering or 
> exiting.
>
This is indeed interesting area for a business collaboration framework. 
Personally I prefer to talk about :
* specification- someone has authored a description of a Business Service
* capability - a party has expressed that party business syste kan 
handle certain b.transactions (type level)
* capacity - ontop of having the capability a party may also express 
that the party has the capacity to use/utilize the capability in certain 
ways (instance level). ex: 6 simultanous enactments, only during office 
hours,...

/anders

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