Some statements about Cardinality and Resources

1)
A single  VEN interface may offer Zero to many resources. It can add new ones or remove old ones.
2)
The set of Resources revealed to a particular partner (VTN) are solely those that the VEN wishes to offer. Whether a there is a one-to-one correspondence between any piece of equipment and a resource publication is entirely up to the VEN and what it wishes to advertise.
3)
A VEN may display different resources to different Market Contexts.
4)
A VEN MAY split its service offerings into multiple Resources because of different grid-relevant characteristics OR for characteristics relevant to its internal decision making and user interfaces (say floors of a commercial building), as meets the needs of the VEN

5)
A Resource may have multiple end-points specified. Probably, these are WS Addressing Points
6)
All end points of a Resource SHALL receive the same operational messages from the VTN.
7)
One end point SHALL receive the Administrative interactions for the Resource. This end point MAY be the sole Operational End Point.

8)
If the Party exposing a VEN surface to an external VTN, is itself exposing a VTN surface to manage its internal market, the external VTN cannot “drill down” to those internal VEN interfaces, except to the extent that the external VEN chooses to offer them as Resources.

“The single biggest problem in communication is the illusion that it has taken place.”  – George Bernard Shaw.
Toby Considine TC9, Inc
TC Chair: oBIX & WS-Calendar
TC Editor: EMIX, EnergyInterop
U.S. National Inst. of Standards and Tech. Smart Grid Architecture Committee
Email:

Phone: (919)619-2104
http://www.tcnine.com/ blog: www.NewDaedalus.com