[Year 12 SofDev] Concurrency Issues
Russell Quinn
QN at boxhillhs.vic.edu.au
Wed Nov 24 13:57:07 EST 2010
Ta for your views..
I was actually wondering if the course writers or
examiners had a view on if concurrency was seen
as examinable. There is allot of stress on the network
environment but I cannot see any formal statement on
concurrency, but I cannot see how to avoid it either.
Regarding the queue, I think it could be managed as
at the application level, provided the file was only
accessible through the application. A bit like a portal
to the file. Since the course talks about queues, I thought
it might be fun to use one, even if a bit contrived.
Regards,
Russell Quinn
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From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] On Behalf Of sofdev-request at edulists.com.au [sofdev-request at edulists.com.au]
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Today's Topics:
1. Re: PSM part 2 (Mark KELLY)
2. Re: Concurrency Issues (Mark KELLY)
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Message: 1
Date: Wed, 24 Nov 2010 08:42:26 +1100
From: Mark KELLY <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] PSM part 2
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
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<AANLkTinQ19+1-Ujy7p_VxRkSkXdq-PrtBNZ097EQvUdG at mail.gmail.com>
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Agree. The PSM discussion in the study design refers to use cases in both
the analysis and design phases. I reckon it shouldn't be in the latter.
On 23 November 2010 16:28, Kevork Krozian <K.Krozian at fhc.vic.edu.au> wrote:
> Hi Mark and friends,
>
>
>
> Quoting from one of my favourite series ? UML 2 for Dummies? p 151;
>
> ? Most developers use use cases as artifacts of analysis. Use cases should
> be used to specify the required behaviours of your system not capture design
> of your system. Design decisions change often; implementations change even
> oftener (sic)?
>
> ..............
>
> ? Separating analysis from design also frees your test team to start
> developing their test plans directly from the use cases ? knowing that the
> use case will be (relatively) stable, knowing that they will be able to test
> the functionality of the system directly from the use case.
>
>
>
> Logical design is in the analysis phase and Physical design in the design
> phase. Use cases describe *what* , not *how* . *How* is worked out later
> in the design phase.
>
>
>
> So, the statement Use cases as being a useful tool to use during physical
> design can only make sense if it is used to inform *how* your design
> should proceed based on the *what* you want to get done from the completed
> analysis .
>
>
>
>
>
> My 2c worth.
>
>
>
> Kind Regards
>
>
>
> Kevork Krozian
>
> Digital Learning Manager
>
> Forest Hill College
>
> www.fhc.vic.edu.au
>
> tel: 0419 356 034
>
>
>
> *From:* sofdev-bounces at edulists.com.au [mailto:
> sofdev-bounces at edulists.com.au] *On Behalf Of *Mark KELLY
> *Sent:* Monday, 22 November 2010 11:18 AM
> *To:* Year 12 Software Development Teachers' Mailing List
> *Subject:* [Year 12 SofDev] PSM part 2
>
>
>
> Hi all. The study design's PSM discussion lists Use Cases as being a
> useful tool to use during *physical design*.
>
> I would have thought they would be a *logical* design tool since they are
> so abstract and emphasise functionality requirements rather than
> implementation methods.
>
> --
> Mark Kelly
> Manager Information Systems
> Reporting Manager
> IT Learning Area Manager
>
> McKinnon Secondary College
> McKinnon Rd McKinnon 3204
> Victoria, Australia
> Direct line / Voicemail: +613 8520 9085
> Fax +613 9578 9253
> kel at mckinnonsc.vic.edu.au
>
> VCE IT Lecture Notes: http://vceit.com
> Moderator: IT Applications Edulist
>
> My cow died on this day two years ago. I know because I noted it in my
> dairy.
>
>
> _______________________________________________
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> IT Software Development Mailing List kindly supported by
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> http://www.vitta.org.au - VITTA Victorian Information Technology Teachers
> Association Inc
>
--
Mark Kelly
Manager Information Systems
Reporting Manager
IT Learning Area Manager
McKinnon Secondary College
McKinnon Rd McKinnon 3204
Victoria, Australia
Direct line / Voicemail: +613 8520 9085
Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
My cow died on this day two years ago. I know because I noted it in my
dairy.
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Message: 2
Date: Wed, 24 Nov 2010 10:02:09 +1100
From: Mark KELLY <kel at mckinnonsc.vic.edu.au>
Subject: Re: [Year 12 SofDev] Concurrency Issues
To: "Year 12 Software Development Teachers' Mailing List"
<sofdev at edulists.com.au>
Message-ID:
<AANLkTi=L7XpeRgk8jYCuAQvDOExpgnw0JbbAsaxJMtgk at mail.gmail.com>
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Locking a file or record was as far as I went with coping with networked
programming. Kids can be responsible for that within their little bit of
code.
Managing a queue for access to files would, I believe, be beyond the scope
of what is expected of students. Such control would have to be outside of
their code, and be OS-dependent, wouldn't it?
On 23 November 2010 14:13, Russell Quinn <QN at boxhillhs.vic.edu.au> wrote:
> Hi all,
> has anyone given thought to concurrency - since
> we are in a networked environment. Do we have
> to cater for locks and deadlocks, perhaps queues
> for access to files - esp during the coding SAC.
> I do not see any mention of these issues in the course
> statements, but I cannot see how you could do a good job
> in a network environment without looking at them.
>
> Regards,
>
> Russell Quinn
> ________________________________________
> From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] On
> Behalf Of sofdev-request at edulists.com.au [sofdev-request at edulists.com.au]
> Sent: Tuesday, 23 November 2010 1:04 PM
> To: sofdev at edulists.com.au
> Subject: sofdev Digest, Vol 68, Issue 36
>
> Send sofdev mailing list submissions to
> sofdev at edulists.com.au
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> To subscribe or unsubscribe via the World Wide Web, visit
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> Today's Topics:
>
> 1. Royce Williams (Margaret Iaquinto)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 23 Nov 2010 13:04:02 +1000
> From: Margaret Iaquinto <Margaret.Iaquinto at stleonards.vic.edu.au>
> Subject: [Year 12 SofDev] Royce Williams
> To: "List', 'Year 12 Software Development Teachers' Mailing"
> <sofdev at edulists.com.au>
> Message-ID: <4CEBBBC2.E9D0.00E9.1 at stleonards.vic.edu.au>
> Content-Type: text/plain; charset="iso-8859-15"
>
>
> Hi
>
> I need to contact Royce Williams who used to work at Billanook. Would
> someone kindly contact me offlist with some details, please?
>
> Maggie
>
>
> Margaret Iaquinto
> Information Technology Coordinator
>
> St Leonard's College
> Brighton Campus
> t (+61 3) 9909 9300
>
> x 529
>
> www.stleonards.vic.edu.au
>
>
>
>
> Alternate email: maggie at iaquinto.net
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> http://www.vitta.org.au - VITTA Victorian Information Technology Teachers
> Association Inc
>
--
Mark Kelly
Manager Information Systems
Reporting Manager
IT Learning Area Manager
McKinnon Secondary College
McKinnon Rd McKinnon 3204
Victoria, Australia
Direct line / Voicemail: +613 8520 9085
Fax +613 9578 9253
kel at mckinnonsc.vic.edu.au
VCE IT Lecture Notes: http://vceit.com
Moderator: IT Applications Edulist
My cow died on this day two years ago. I know because I noted it in my
dairy.
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