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Re: Definitions

From: David Booth <dbooth@w3.org>
Date: Tue, 19 Mar 2002 09:25:19 -0500
Message-Id: <5.1.0.14.0.20020319092043.0285c8d8@localhost>
To: www-ws-desc@w3.org, www-ws-arch@w3.org
I should clarify that the definitions below are intended for the WS 
Description WG.  The Architecture group may need broader definitions 
because its charter is much broader.  However, we obviously want to 
coordinate definitions between the groups as much as possible.

At 06:21 PM 3/18/2002 -0500, David Booth wrote:
>Here is a new draft of definitions, incorporating a number of people's 
>suggestions and concerns.  I am cross posting this to both the WS-Arch WG 
>and the WS-Desc WG because it is clearly relevant to both groups.  Again, 
>please comment.
>
>
>Non-Normative Definitions
>=========================
>
>Web Service
>"A web service is is a software application or component that can be 
>accessed over the Internet using a vendor/platform/language-neutral data 
>interchange format to invoke the service and supply the response, using a 
>rigorously defined message exchange pattern, and producing a result that 
>is sufficiently well-defined to be processed by a software application." [1]
>
>[The above definition was lifted verbatim from a WS Arch WG 
>draft.[1]  Note that this definition does not specifically mention "URI" 
>or "XML".  If the definition of "Web Service" does not specifically 
>mention URI or XML, then I would suggest that we specifically mention 
>"URI" and "XML" elsewhere in our requirements, if desired.  -- David Booth]
>
>Client
>Software that makes use of a Web Service, acting as its "user" or "customer".
>
>Normative Definitions
>=====================
>
>Message
>The basic unit of communication between a Web Service and a Client: data 
>to be communicated to or from a Web Service as a single logical transmission.
>
>Operation
>A set of messages related to a single Web Service action.
>
>Interface (a/k/a "Port Type")
>A logical grouping of operations.   An Interface represents an 
>abstract  Service type, independent of transmission protocol and data format.
>
>Binding
>An association between an Interface, a concrete protocol and a data 
>format.  A Binding specifies the protocol and data format to be used in 
>transmitting messages defined by the associated Interface.
>
>Port
>An association between a Binding and a network address, specified by a 
>URI, that may be used to communicate with an instance of a Service.  A 
>Port indicates a specific location for accessing a Service using a 
>specific protocol and data format.
>
>Service
>A collection of Ports.
>
>References
>==========
>
>[1] http://www.w3.org/2002/ws/arch/2/wd-wsawg-reqs-03042002
>
>
>David Booth
>W3C Fellow / Hewlett-Packard
>Telephone: +1.617.253.1273

David Booth
W3C Fellow / Hewlett-Packard
Telephone: +1.617.253.1273
Received on Tuesday, 19 March 2002 09:25:21 GMT

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