+1 on Ken’s view here. It strikes me
that Blueprints will necessitate levels of definition; else this debate will
become circular. Duane recently posted a good image (for SOA-RM intro
discussion) around this, which I’ve modified (very!) slightly – see
attached – both original and modified. Nutshell – a high level
Blueprint (meta?) with the highest level of abstraction could allow us to more
comfortably move forward on some (several?) scenario’s.
Marc.
From:
Ken Laskey [mailto:klaskey@mitre.org]
Sent: 30 November 2005 12:58
To: Jones, Steve G; John Harby;
marchadr@wellsfargo.com
Cc: jinu.joseph@polaris.co.in;
soa-blueprints@lists.oasis-open.org
Subject: RE: [soa-blueprints]
Primer
Reading this and the emails that followed, I think we need to differentiate
whether we are building blueprints that are reusable skeletons or generating
random examples. I see a framework into which the steps of buyProduct can
be assembled as being a framework but this is the intent of BPEL. I see
the specifics of buyProduct as being an example that will be quite different
for every company. While one can argue that the former should find its
way to a standard, the latter belongs in a how-to book.
Ken
At 01:05 PM 11/29/2005, Jones, Steve G wrote:
I’ll try and add more confusion into
the equation….
An example
Service “Sales” has a method “buyProduct” which takes
as parameters a Product ID and quantity (WS-Security is used to identify
the customer), this is built as a BPEL process in the following way
1) Perform Credit Check
(calls CreditService with the customer details) – short life process
2) Place Order with Logistics
(calls the LogisticsService with the order, returns a lead time)
3) Return Lead time back to
customer (end of initial customer interaction)
4) Receive notification of
delivery to Customer (event back from the LogisticsService)
5) Invoice Customer (fires
off to FinanceService for the cash handling.
Thus the high level process (steps 1-5) is a long running process (order of
days), which acts initially to the customer as a short life process (returning
the information to the customer, before waiting for an event to complete the
full transaction by triggering another long running process (inside
FinanceService) this later element being irrelevant to the Sales Service as it
completes when it fires the event (doesn’t need to wait for payment).
Long v short is really about user notification and state management IMO (users
need to know “DON’T WAIT IT WILL TAKE FIVE DAYS” and you
don’t want 1m state objects hanging around in memory.
Steve
From: John Harby [ mailto:jharby@gmail.com]
Sent: 29 November 2005 17:00
To: marchadr@wellsfargo.com
Cc: klaskey@mitre.org; Jones,
Steve G; jinu.joseph@polaris.co.in; soa-blueprints@lists.oasis-open.org
Subject: Re: [soa-blueprints]
Primer
I'm not very clear on this one. Suppose I have a simple scenario where an item
is scheduled for processing in a factory by assigning someone a task in an
orchestration. The processing takes several days to complete so the process is
long running temporally but the actual BPEL representing the orchestration
could be very brief. How is this long running process the same as short processes
or have I misunderstood the term "long" here?
On 11/29/05, marchadr@wellsfargo.com < marchadr@wellsfargo.com> wrote:
Blackberry typo:
If a process can trigger other processes it seems in an abstract sense
the same as a long running process.
Since a long running process is essentially short processes completing
triggering the next process to run on a long term entity.
Does this make a bit more sense?
- Dan
-----Original Message-----
From: Ken Laskey [
mailto:klaskey@mitre.org]
Sent: Tuesday, November 29, 2005 7:15 AM
To: Marchant, Dan R.; steve.g.jones@capgemini.com;
jinu.joseph@polaris.co.in; soa-blueprints@lists.oasis-open.org
Subject: Re: [soa-blueprints] Primer
Not sure what meant by
If processes can trigger other processes that seems at and abstract
since the same as what a long running process is doing.
but generally +1
Ken
At 09:25 AM 11/29/2005, marchadr@wellsfargo.com
wrote:
>It seems you guys are pretty much in a greement. To sum up:
>
>1. Long running process in reality are short processes that are
>executed at different intervals
>2. Processes can trigger other processes to happen
>
>If processes can trigger other processes that seems at and abstract
>since the same as what a long running process is doing. What is
>stateful on the long running process is the entity which is acted
>upon not necessarily the process itself.
>
>Agree?
>
>- dan
>
>
>
>
>-----Original Message-----
>From: Ken Laskey <klaskey@mitre.org>
>To: Jones, Steve G <
steve.g.jones@capgemini.com>; Marchant, Dan R.
>< marchadr@imc.wellsfargo.com>;
jinu.joseph@polaris.co.in
>< jinu.joseph@polaris.co.in >;
soa-blueprints@lists.oasis-open.org
><
soa-blueprints@lists.oasis-open.org>
>Sent: Tue Nov 29 07:31:34 2005
>Subject: RE: [soa-blueprints] Primer
>
>Steve,
>
>Good luck on the head cold :-)
>
>The key is modularity. You can't reuse pieces if one piece is the
>entire process. You can't effectively modify your process if every
>change requires a rewrite of your stovepipe software.
>
>This gets back to the question of what we mean by blueprint and what
>we are writing it/them for. Do we write a detailed POS
>blueprint? How reusable is that for someone not interested in
>POS? Can we lay out a few generic blueprints for things like
>long-running processes with structure that says, "Your company
>specific piece fits here."?
>
>So I think we mostly agree.
>
>Ken
>
>At 04:48 AM 11/29/2005, Jones, Steve G wrote:
>
>
>
> > > -----Original Message-----
> > > From: Ken Laskey [mailto: klaskey@mitre.org]
> > > Sent: 23 November 2005 15:40
> > > To: marchadr@wellsfargo.com;
jinu.joseph@polaris.co.in ; soa-
> > > blueprints@lists.oasis-open.org
> > > Subject: RE: [soa-blueprints] Primer
> > >
> >
> > > OK, now we're getting to some meaty issues :-)
> > >
> >
> > > It would seem that a useful pattern would be a long-running
business
> > > process, where the "business" could as likely be
technical as
> > > commercial. What are the requirements of such a
process? What
> > > assumptions do we make about the process? What are the
notional
> > > pieces of a solution? How do these pieces notionally work
> > > together? Where are there alternatives? Finally,
what combination
> > > of completed standards, specifications within standards
committees,
> > > and private specifications will likely enable such a blueprint?
> >[Jones, Steve G]
> >
> >
> >Depending on what you mean here by process I'll either massively agree
or
> >throw my hands up in despair :)
> >
> >Unfortunately I'm in Q4 Crunch at the moment so time is stretched, but
on
> >the Soalogic (Google aware in 3 days Dan!) business I'm looking to
define
> >(help would be great) the hierarchy of order to cash processes.
Most IT
> >efforts at the business level that I've seen fail, and which have been
the
> >hardest to clean up, is when IT tries to map an end to end process in
its
> >entirety. This fails for many reasons
> >1) The process is too large and unmanageable
> >2) It's the first time the business has seen its process codified,
they'll
> >want to change it
> >3) Different parts of the organisation want to change the process in
> >different ways
> >
> >This is why structure is (IMO) 100% required to have a successful and
> >effective SOA. Taking the loan decisioning example....
> >
> >This is long running from the CUSTOMERS perspective but for several
> >departments it's a short-lived process, and one which they want to
optimise
> >(e.g. credit check and scoring) on a regular basis. Thus there
is a
> >high-level process for tracking progression (long lived), within which
each
> >step is probably in itself a process, some long lived (confirmation of
paper
> >work), but mostly short-lived. This is where service really
comes into its
> >own as it provides the boundaries for both the high-level process
(normally
> >fairly static) and the lower level processes (often required to be
dynamic)
> >this differing rates of change in different parts of the organisation
is a
> >massive challenge if you view this as a single process.
> >
> >Each process step should be a service invocation therefore that has
its own
> >associated control and rate of change, which has a clear boundary from
the
> >main process, which is itself just a service offered to the
customer. There
> >is an interesting challenge here on how interactive processes are
exposed
> >and managed from a service, does the process "request"
interaction with the
> >user, or does it have its own contained user interface?
> >
> >I agree with the principle of taking a "thread" through an
organisation, but
> >I'd argue we should treat it more as a series of service invocations
than a
> >CICS transaction.
> >
> >
> >The example below from Dan is a great one, in theory you could view
the POS
> >transaction as being a process that includes stock-reordering,
warehouse
> >management, back to manufacturing, back to the supplier etc etc.
But its
> >not, it's a process that has an effect that could result in other
processes
> >being triggered. Equally strategic budgeting effects everything
in the
> >business, but its an "information in", "information
out" high-level command
> >process.
> >
> >In terms of standards WS-Contract (pre,post,invariant) would be a
welcome
> >addition!
> >
> >Steve (with a massive head cold)
> >
> >
> >
> > >
> >
> > > Note, part of the output of this thought process could be
feedback to
> > > existing committees on what is needed from their specs or how
the
> > > process needs to be curtailed to fit the current and evolving
standards.
> > >
> >
> > > Ken
> > >
> >
> > > At 10:24 AM 11/23/2005, marchadr@wellsfargo.com
wrote:
> > > >Jinu these are good points.
> > > >
> > > >Something I would say to this would be that in most
implementations
> > > >of SOA there are basic structures that could be followed
with the
> > > >variation being the actual business logic.
> > > >
> > > >Even within a certain space there are multiple blueprint
needs.
> > > >
> > > >For instance,
> > > >
> > > >- Fulfilling a loan may be a long running process that might
take
> > > >into account a workflow with certain security requirements
etc...
> > > >
> > > >- While making a wires transfer would have to be highly
available
> > > >and have routing based on fraud and security rules without
the need
> > > >of long running process
> > > >
> > > >
> > > >To apply them to some of the cases within the soalogic
approach you
> > > >could see the following:
> > > >1. Based on the process of developing a product within
soalogic they
> > > >need a managed long running process. This pattern without
the
> > > >specific business logic could be applied to the loan case.
Or could
> > > >even be applied to strategic budget planning, etc...
> > > >
> > > >2. The retail store is using a pos process that needs to be
secure
> > > >and have fraud detection for purchases made by the customer
this
> > > >could be applied without the specific business logic to a
wire transfer
> > > case.
> > > >
> > > >The actual blueprints could be extracted for 1 that state:
> > > >- WS-BPEL - manage the long running process
> > > >- Transport types that could apply (HTTP/HTTPS/MQ)
> > > >- WS-Security - for managing who is able to update from a
client
> > > >auth perspective
> > > >- WS-Coordination - to coordinate with different SORs
> > > >- WS-Notification - to alert either an operation or customer
service
> > > >agent of an issue within the process through an intermediary
service
> > > >- WS-Profile - for indentify the service
> > > >- WS-CAF - to provide context around who the requestor is
> > > >- Fault Management - how and what type of responses would
happen,
> > > >sending an WSN event?
> > > >- XACML - for determining the rights of the user invoking
the service
> > > >- etc...
> > > >
> > > >So what you end up doing is creating a stack of patterns
that could
> > > >be applied to a problem area that involves long running
operations
> > > >or short fast operations, etc...
> > > >
> > > >Of course the specific technology may not be decided upon
within the
> > > >blueprint but the concepts within WS-BPEL will be abstracted
with an
> > > >example implementation of how WS-BPEL fulfills the specific
request.
> > > >Essentially think of the types of services you have ever
created and
> > > >think about a lot of the common problems you had to solve
along the
> > > >way to get specific business logic to be invoked within a
service
> > > >context. There are a lot of problems that are common across
> > > >implementations such as security, event management,
auditing, even
> > > >in some cases accounting to chargeback for a service
invocation to a
> > > >specific customer or internal client. Some of these could be
in a
> > > >ESB or some could reside with the service and it may be
worthwhile
> > > >to come up with a sample deployment for each blueprint that
may
> > > >determine the type of system needs associated with the
blueprint.
> > > >
> > > >I'll try and come up with an example at the end of the week
or next
> > > >week so you don't think I am crazy :)
> > > >
> > > >- Dan
> > > >
> > > >
> > > >-----Original Message-----
> > > >From: jinu.joseph@polaris.co.in
[mailto:
jinu.joseph@polaris.co.in]
> > > >Sent: Tuesday, November 22, 2005 7:58 PM
> > > >To: soa-blueprints@lists.oasis-open.org
> > > >Subject: RE: [soa-blueprints] Primer
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >Hi Folks
> > > >I am just thinking aloud here. I feel that while a
blueprint
> does give a
> > > >kind of basic map while moving into uncharted territory, it
> still has the
> > > >following limitations
> > > >
> > > >- Blueprints as discussed are limited to a category of
> contexts. Going by
> > > >the house analogy the blueprint i need for the house will be
> dependent on
> > > >who I am and where I want to build the house. If I am the
President of
> > > the
> > > >United
States, then I cannot build the house using
the same blueprint
> > > that
> > > >you and me would use, Similarly if I would use different
blueprints to
> > > >build my house in the Sahara Dessert and my house in Antarctica. What I
> > > am
> > > >trying to say is that the Blueprint might applicable for a
> type of system
> > > >and may not be useable for all software systems wanting to
go the SOA
> > > way.
> > > >The SOA blueprint for the Financial Services Systems used by
Banks would
> > > be
> > > >different from that used by Corporates for their Inventory
Management
> > > >System.
> > > >
> > > >- Trying to make a generalized blueprint will lead to such a
high level
> > > of
> > > >abstraction that the blueprint itself might not be of much
use. Going
> > > back
> > > >to the house analogy trying to make a generalized blueprint
> might lead to
> > > >the blueprint only containing guidelines like, there should
be a
> > > >foundation, there should be a ceiling, there should be
windows etc...
> > > >
> > > >- What I feel is that we should have SOA blueprints based on
software
> > > >segments such BFSI segment, ERP segment, Services like
Utilities etc.
> > > >
> > > >What do you say ??
> > > >
> > > >Regards
> > > >Jinu Joseph
> > > >Polaris Software Lab Ltd
> > > >e-mail: jinu.joseph@polaris.co.in
> > > >
> > > >
> > > >
> > > >
> > >
>
<marchadr@wellsf
> > > >
> > > >
argo.com
>
To:
> > > > <klaskey@mitre.org>
> > >
>
cc:
> > > > <
soa-blueprints@lists.oasis-open.org>, (bcc: jinu.joseph/Polaris)
> > >
>
23-11-05 03:53
Subject: RE:
> > > > [soa-blueprints] Primer
> > >
>
AM
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >See comments below. Good feedback Ken.
> > > > -----Original
Message-----
> > > > From: Ken Laskey [ mailto:klaskey@mitre.org]
> > > > Sent: Tuesday, November
22, 2005 12:07 PM
> > > > To: Marchant, Dan R.
> > > > Cc: soa-blueprints@lists.oasis-open.org
> > > > Subject: Re:
[soa-blueprints] Primer
> > > >
> > > > At 09:50 AM 11/22/2005,
marchadr@wellsfargo.com wrote:
> > >
>
Ken these are questions that I am sure with be concretely
> > >
>
established by this tc. Here is my take (keep in mind I am
> > > on a
> > >
>
blackberry so it might be more terse than normal).
> > > >
> > >
> 1.
A blueprint in my mind is to establish a structure to an
> > >
>
other wise disorganized approach to developing software. I
> > > have
> > >
>
typically called blueprints a reference
> architecture (not to
> > > be
> > >
>
confused w/reference model).
> > > >
> > >
> 2.
Think of the scenario of buying building blueprints from
> > > a
> > >
> house
designer and than having though blueprints tweaked by
> > > a
> > >
>
local architect of the house. Maybe for your requirements
> > > you
> > >
>
need the kitchen closer to the family room or a
> water closet
> > >
>
turned into a walk in closet. Whatever the
> changes the basic
> > >
>
structure is defined for what you need to accomplish
> > > building a
> > >
>
house with N number of rooms that each have a function.
> > > >
> > > > You might find this
analogy interesting:
> > > >
> > > > > Go back to our
house analogy. The RM captures concepts related
> > > to
> > > > > what makes up a
house, e.g. room, window, door. It
> might include
> > > > > the concepts of
food preparation area and personal hygiene area
> > > and
> > > >
> > > > > the relationship
that there should be physical separation
> > > between
> > > > > the two. Note that
this provides a very North American/western
> > > > > Europe
reference and not necessarily one that covers a tent. So
> > > a
> > > > > given RM already
provides a perspective.
> > > > >
> > > > > Given RM concepts,
various RAs show how these concepts can be
> > > > > arranged in a
useful pattern. So RA examples would be
> (sorry for
> > > > > the American
terms) a colonial, a split-level, a rambler, etc.
> > > You
> > > > > can play with the
pattern but one can say that any
> given pattern
> > > > > serves a
particular set of purposes (e.g. a rambler is on one
> > > level
> > > >
> > > > > for those who
want/need to avoid stairs).
> > > > >
> > > > > An architecture is
then a specific plan to build a house or set
> > > of
> > > > > houses. There can
still be some variations but you don't do
> > > things
> > > > > like moving
fireplaces or structural walls, else you have a new
> > > > > architecture.
> > > > [Marchant, Dan R.]
Sounds a lot like the movie "Kitchen Stories"
> > > > about the period of
time where sweden
was conducting studies on
> > > the
> > > > usability of a kitchen
to identify patterns of usage.
> In some ways
> > > > the development of a
blueprint is similar in nature to
> the kitchen
> > > > studies in the 50s.
> > > >
> > > > Is a rambler a ranch
style house? I agree with the structural
> > > > statement creating a
bit of constraints that take care of the
> > > > reduntant nature of
developing an SOA. Everyone in the
> US
probably
> > > > has a water closet
(bathroom) in the master bedroom a
> pattern that
> > > is
> > > > identified based on the
experience of the architects in finding
> > > the
> > > > needs of the consumer
of the house. Likewise the blueprints can
> > > > evolve by building on
the reference model.
> > > >
> > > >
> > >
> 3.
To establish direction or rudder the ship. You need to
> > >
>
establish the pie in the sky and a blueprint can help get a
> > > >
handle on that pie.
> > > >
> > > > If you have a ship
without a rudder, you are likely beyond being
> > > > saved by a blueprint
:-)
> > > >
> > >
> 4.
There is a type of tracability that can be accomplished
> > > >
through following a blueprint. Also it may be important to
> > > use
> > >
> a
third-party blueprint to establish a motive for changing
> > > the
> > >
>
way a business does things, not sure if this applicable for
> > > >
everyone but there is definely value in having something to
> > >
>
refer too.
> > > >
> > > > Good points. Now
can someone craft those into a paragraph or two
> > > > that any of us can
present to a client and they would feel they
> > > know
> > > > something they didn't
know before?
> > > > [Marchant, Dan
R.] Wiki ?
> > > >
> > >
> My
take is this on the blueprint roadmap so to speak.
> > > >
> > >
> 1.
Establish a couple different scenarios where services
> > > would
> > >
>
help and how the service would be structured within that
> > >
>
context and including supporting services.
> > > >
> > >
> 2.
Take the scenarios and generalize them into
> patterns with
> > >
>
some technology choices as and example of implementing
> > > pattern.
> > > >
> > >
> 3.
Establish an overview of how all the supporting services
> > >
>
could be structure to support the various patterns.
> > > >
> > >
> It
would essentially turn into a type of framework, a
> > > service
> > >
>
could follow and establish the need for supporting services
> > > in
> > >
> a
formal way.
> > > >
> > > > Step 2 after you define
a blueprint is to lay out how you would
> > > > create one. Your
roadmap looks like a good initial
> approach, both
> > > > for motivating a
blueprint and showing how one blueprint
> > > > can/should/might
support more than one scenario.
> > > >
> > >
> I
could see it on the same lines of developing anything
> > > spring
> > >
> or
a portal. You have a set of facilities that are
> > > applicable
> > >
>
for certain scenarios that than could be implemented of
> > >
>
configured appropriately.
> > > >
> > >
>
The great unknown being what business logic is
> performed but
> > >
>
most of it could be generalized into some type of pattern.
> > > For
> > > >
example, transaction based, inquiry based, aggregation, or
> > > even
> > >
>
everyone's favorite semantic service.
> > > >
> > >
>
Thoughts from the group?
> > > >
> > >
>
Dan
> > > >
> > > >
> > > >
> > > >
> > >
>
-----Original Message-----
> > >
>
From: Ken Laskey <klaskey@mitre.org>
> > >
>
To: Marchant, Dan R. <
marchadr@imc.wellsfargo.com>
> > >
>
CC: soa-blueprints@lists.oasis-open.org
> > >
>
<
soa-blueprints@lists.oasis-open.org>
> > > >
Sent: Mon Nov 21 22:42:48 2005
> > >
>
Subject: Re: [soa-blueprints] Primer
> > > >
> > >
> I
have not been following the email carefully enough, so
> > >
>
forgive me if this has already been established but
> > > >
> > >
> 1.
Exactly what is a blueprint?
> > >
> 2.
What purpose does it serve?
> > >
> 3.
Why should I think one will be generally applicable?
> > >
> 4.
Why do I care?
> > > >
> > >
> Do
we expect that a blueprint will be a sort of turnkey
> > >
>
formula? How do we determine the limits of applicability
> > > for a
> > >
>
given blueprint? Are there underlying assumptions that all
> > >
>
blueprints have in common, or is each blueprint
> > > fundamentally
> > >
>
different (a very possible construction), or are there
> > >
>
fundamental groupings with multiple non-redundant examples
> > > in
> > >
>
each group?
> > > >
> > >
> I
think agreeing on a clear strawman definition
> of blueprint
> > > is
> > >
>
essential. It can be modified as we learn more but we need
> > > a
> > >
>
clear starting point.
> > > >
> > >
> Ken
> > > >
> > >
> On
Nov 21, 2005, at 9:12 PM, <marchadr@wellsfargo.com
>
> > >
>
<marchadr@wellsfargo.com >
wrote:
> > > >
> > > >
> > > >
> > >
>
One question to pose to the group is maybe the case study
> > >
>
actually becomes a type of primer for the blueprints once
> > > the
> > >
>
blueprints are defined.
> > > >
> > >
>
Thoughts?
> > > >
> > >
>
Dan
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
>
---
> > >
>
Ken Laskey
> > >
>
MITRE Corporation, M/S H305 phone: 703-983-7934
> > >
>
7515 Colshire
Drive
fax:
> > >
>
703-983-1379
> > >
> McLean VA
22102-7508
> > > >
> > > >
> > > > --
> > > >
> > > >
> > >
>---------------------------------------------------------------
> ----------
> > > --------
> > > >
> > > >
/ Ken Laskey
> > > > \
> > > >
| MITRE Corporation, M/S H305 phone:
703-983-7934 |
> > > >
| 7515 Colshire
Drive
fax: 703-983-
> > > 1379
> > > > |
> > > >
\ McLean VA 22102-7508
> > > > /
> > > >
> > > >
> > >
>---------------------------------------------------------------
> ----------
> > > ---------
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >This e-Mail may contain proprietary and confidential
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> > > >You are also hereby notified that any use, any form of
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> > > >
> > > >Visit Us at http://www.polaris.co.in
> > >
> >
> > > --
> > >
> --------------------------------------------------------------------
> > > -------------
> > > / Ken
> > >
Laskey
\
> > > | MITRE Corporation, M/S
H305 phone: 703-983-7934 |
> > > | 7515 Colshire Drive
fax: 703-983-1379 |
> > > \ McLean VA
>
22102-7508
/
> > >
> ---------------------------------------------------------------------
> > > -------------
> > >
> >
> >
> >
> >This message contains information that may be privileged or
> >confidential and is the property of the Capgemini Group. It is
> >intended only for the person to whom it is addressed. If you are not
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any
> >part thereof. If you receive this message in error, please
notify
> >the sender immediately and delete all copies of this message.
>
>--
>
>---------------------------------------------------------------------------------
> / Ken
>Laskey
\
> | MITRE Corporation, M/S
H305 phone: 703-983-7934 |
> | 7515
Colshire Drive
fax: 703-983-1379 |
> \ McLean
VA 22102-7508
/
>
>----------------------------------------------------------------------------------
>
--
---------------------------------------------------------------------------------
/ Ken
Laskey
\
| MITRE Corporation, M/S H305
phone: 703-983-7934 |
| 7515
Colshire Drive
fax: 703-983-1379 |
\ McLean
VA 22102-7508
/
----------------------------------------------------------------------------------
This message contains information that may be privileged or confidential and is
the property of the Capgemini Group. It is intended only for the person to whom
it is addressed. If you are not the intended recipient, you are not authorized
to read, print, retain, copy, disseminate, distribute, or use this message or
any part thereof. If you receive this message in error, please notify the
sender immediately and delete all copies of this message.
--
---------------------------------------------------------------------------------
/ Ken
Laskey
\
| MITRE Corporation, M/S H305
phone: 703-983-7934 |
| 7515
Colshire Drive
fax: 703-983-1379 |
\ McLean
VA 22102-7508
/
----------------------------------------------------------------------------------