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Iterations [message #40986]

Mon, 24 September 2007 04:40

Paul Glezen

Messages: 60
Registered: July 2009

Member

I'm unsure how to convey "iterative activity." I run across two general
types of iterations in my modeling of development processes.

1. Piecemeal - Whereby each iteration is essentially
the same activity, repeated multiple
times.
2. Evolutionary - Whereby a component is realized in
over multiple iterations, be each
iteration is a different activity.

An piecemeal example is developing a persistence layer. The iterative
steps would be adding support for one query/table for one iteration, and
other queries/tables for other iterations. The activity of adding
support for different queries is very similar from one iteration to the
next.

An evolutionary example would be developing a transport layer. The
first iteration would be simply getting something that excepts a request
and logs it. There might not be any other code to invoke at this point.
But later iterations would add support for interpretations of various
messages and the invocations of downstream components. It's an
iterative process, but the steps are not identical for each iteration.

Does EPF provide a way to model these? I've been developing for a
while, but I'm new to process modeling.

- Paul

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Re: Iterations [message #41017 is a reply to message #40986]

Mon, 24 September 2007 10:33

Roman Smirak

Messages: 136
Registered: July 2009

Senior Member

Isn't this incremental vs. iterative?

Roman

"Paul Glezen" <pglezen@us.ibm.com> wrote in message
news:fd7f3j$at9$1@build.eclipse.org...
> I'm unsure how to convey "iterative activity." I run across two general
> types of iterations in my modeling of development processes.
>
> 1. Piecemeal - Whereby each iteration is essentially
> the same activity, repeated multiple
> times.
> 2. Evolutionary - Whereby a component is realized in
> over multiple iterations, be each
> iteration is a different activity.
>
> An piecemeal example is developing a persistence layer. The iterative
> steps would be adding support for one query/table for one iteration, and
> other queries/tables for other iterations. The activity of adding support
> for different queries is very similar from one iteration to the next.
>
> An evolutionary example would be developing a transport layer. The first
> iteration would be simply getting something that excepts a request and
> logs it. There might not be any other code to invoke at this point. But
> later iterations would add support for interpretations of various messages
> and the invocations of downstream components. It's an iterative process,
> but the steps are not identical for each iteration.
>
> Does EPF provide a way to model these? I've been developing for a while,
> but I'm new to process modeling.
>
> - Paul

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Re: Iterations [message #41171 is a reply to message #41017]

Wed, 26 September 2007 03:26

Paul Glezen

Messages: 60
Registered: July 2009

Member

Perhaps. Which one is "incremental" and which one is "iterative"?

After reviewing the input fields available, I suspect we simply describe
what we mean in the "Main" section of the iteration panel itself.

Roman Smirak wrote:
> Isn't this incremental vs. iterative?
>
> Roman
>
> "Paul Glezen" <pglezen@us.ibm.com> wrote in message
> news:fd7f3j$at9$1@build.eclipse.org...
>> I'm unsure how to convey "iterative activity." I run across two general
>> types of iterations in my modeling of development processes.
>>
>> 1. Piecemeal - Whereby each iteration is essentially
>> the same activity, repeated multiple
>> times.
>> 2. Evolutionary - Whereby a component is realized in
>> over multiple iterations, but each
>> iteration is a different activity.
>>

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Re: Iterations [message #41263 is a reply to message #41171]

Thu, 27 September 2007 07:06

Roman Smirak

Messages: 136
Registered: July 2009

Senior Member

May this help
http://en.wikipedia.org/wiki/Iterative_and_incremental_devel opment?

I guess definitions may vary however my understanding was that the iterative
rather means evolutionary whereas incremental means complete piece of
functionality at the time.

Note that there are certain reasons to deliver an increment in the iteration
but that is probably another topic..

Hope this helps,

Roman

"Paul Glezen" <pglezen@us.ibm.com> wrote in message
news:fdcjho$tkb$1@build.eclipse.org...
> Perhaps. Which one is "incremental" and which one is "iterative"?
>
> After reviewing the input fields available, I suspect we simply describe
> what we mean in the "Main" section of the iteration panel itself.
>
> Roman Smirak wrote:
>> Isn't this incremental vs. iterative?
>>
>> Roman
>>
>> "Paul Glezen" <pglezen@us.ibm.com> wrote in message
>> news:fd7f3j$at9$1@build.eclipse.org...
>>> I'm unsure how to convey "iterative activity." I run across two general
>>> types of iterations in my modeling of development processes.
>>>
>>> 1. Piecemeal - Whereby each iteration is essentially
>>> the same activity, repeated multiple
>>> times.
>>> 2. Evolutionary - Whereby a component is realized in
>>> over multiple iterations, but each
>>> iteration is a different activity.
>>>

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Re: Iterations [message #41679 is a reply to message #41263]

Sat, 29 September 2007 17:58

Paul Glezen

Messages: 60
Registered: July 2009

Member

Thanks, Roman. I think this straightens me out.

Roman Smirak wrote:
> May this help
> http://en.wikipedia.org/wiki/Iterative_and_incremental_devel opment?
>
> I guess definitions may vary however my understanding was that the iterative
> rather means evolutionary whereas incremental means complete piece of
> functionality at the time.
>
> Note that there are certain reasons to deliver an increment in the iteration
> but that is probably another topic..
>
> Hope this helps,
>
> Roman

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