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Subject: Re: [soa-rm-ra] Re: Suggested Modification For Figure 24 ServiceDescription


I think adding Execution Context (EC) - business EC and technical EC - to the Service Description places the service in the real world. Some of service functionality and capabilities as well as RWE directly depend on the EC, i.e. interaction (communication and execution) policies. Behavior of IS/technical services totally depends on the platforms they run on; behavior of business services totally depends on the local business policies and law.

If the service description (or derived service contract) contains SLA, the EC is the major factor for it: particular SLA may be promised (by the service provider) in the concrete EC only. A change to the EC constitutes, at least, re-testing of the service, i.e. such change leads to the change in the service contract. Sometimes, I tell people that service reuse differs from just service use by a change in the EC: no changes - it is just use; a change - it is re-use.

- Michael

----- Original Message -----
From: "Ken Laskey"
To: "Estefan, Jeff A"
Cc: "soa-rm-ra@lists.oasis-open.org" <soa-rm-ra@lists.oasis-open.org>
Subject: Re: [soa-rm-ra] Re: Suggested Modification For Figure 24 Service Description
Date: Wed, 29 Apr 2009 11:28:35 -0400


Jeff,

I don't think we're after saying anything new but rather making
sure we leave enough bread crumbs for our readers.

Ken

On Apr 29, 2009, at 10:59 AM, Estefan, Jeff A wrote:

> Danny/Ken,
>
> This discussion has come up several times in the past. I thought
> we agreed way back when that capability was a superset of
> functionality. In other words, capability includes not only what
> a service does (i.e., functionality) but also how well it does
> it (i.e., quality attributes - QoS, QoP, etc.).
>
> Will have to catch you all on next week's call. Have to attend
> an off-site course today.
>
> Cheers!
>
> - Jeff
>
>
>
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-----------------------------------------------------------------------------
Ken Laskey
MITRE Corporation, M/S H305 phone: 703-983-7934
7515 Colshire Drive fax: 703-983-1379
McLean VA 22102-7508






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