[Year 12 SofDev] yet another UCD

Sat Feb 12 12:22:28 EST 2011

Hello Michael, Mark and others

You may have come across this web site (agile programming - previous study design). It shows one use of multiple boundaries, although not for separating 'of interest' from 'not to be considered'. Rather, it uses them to show development stages.
http://www.agilemodeling.com/artifacts/useCaseDiagram.htm

This one is interesting too. It uses boundaries to compartmentalise the 'system' but the paragraph leading into it suggests that this is not strict UML convention
http://www.ibm.com/developerworks/webservices/library/ws-wsisamp/

and this uses multiple boxes to break down a complex set of interactions (admin, server, browser, user) into two separate sets of interactions (this whole tutorial is worth a read - someone from Carnegie Mellon so it must carry some weight! Also, I am assuming <<uses>> is equivalent to <<includes>>)
http://www.andrew.cmu.edu/course/90-754/umlucdfaq.html

Regards
Robert T-A
Brighton SC
  ----- Original Message ----- 
  From: Mark KELLY 
  To: Year 12 Software Development Teachers' Mailing List 
  Sent: Friday, February 11, 2011 6:44 PM
  Subject: Re: [Year 12 SofDev] yet another UCD

  G'day Michael.  Thanks for identifying the software - Paula was interested in that sort of information.

  re. arrows: usually the primary actor (the one wanting response from the system and initiates the transaction) has an arrow pointing to the secondary actor (the one who provides a service to the system).

  The direction of the arrows is sometimes obvious (when the case study is known), sometimes it's not.  A good skill is being able to reverse-engineer a case study from a UCD.

  I've not met additional system boundaries before, so you could be quite right.  Does anyone else have 2c to spend?

  Cheers
  Mark

  On 11 February 2011 15:34, Michael Wooldridge <mwo at mornsc.vic.edu.au> wrote:

    It was created using Microsoft Visio! 

    Yes I deliberately left arrowheads off the association lines. Partly because I was following the example in Adrian Janson’s book, and partly because I didn’t think it really needed them. I think the direction of flow is obvious from the relationships.

    I believe that sub-systems can be represented by additional system boundaries within the primary system boundary. But, if I am in error, I should be grateful if anyone could definitively tell me so.

    "It is the tragedy of the world that no one knows what he doesn't know - and the less a man knows, the more sure he is that he knows everything" Joyce Cary.

    Michael Wooldridge

    Information Technology Coordinator

    Mornington Secondary College

    1051 Nepean Highway, Mornington 3931

    (: 03 59700250 6: 03 59700299

    mwo at mornsc.vic.edu.au

    Important - This email and any attachments may be confidential. If received in error, please contact us and delete all copies. Before opening or using attachments check them for viruses and defects. Regardless of any loss, damage or consequence, whether caused by the negligence of the sender or not, resulting directly or indirectly from the use of any attached files our liability is limited to resupplying any affected attachments. Any representations or opinions expressed are those of the individual sender, and not necessarily those of the Department of Education and Early Childhood Development. There, that just about covers everyone's arse but yours, sorry.

    From: sofdev-bounces at edulists.com.au [mailto:sofdev-bounces at edulists.com.au] On Behalf Of Mark KELLY
    Sent: Friday, 11 February 2011 3:19 PM
    To: Year 12 Software Development Teachers' Mailing List
    Subject: Re: [Year 12 SofDev] yet another UCD

    Thanks Michael.  That looks jolly nice. What software did you use to create it?

    I notice you don't put arrows on primary actor association lines - is that deliberate?

    And the isolated box for installing the system - I haven't seen that technique before.

    It does seem there's more that one way to skin a UCD.

    On 11 February 2011 13:44, Michael Wooldridge <mwo at mornsc.vic.edu.au> wrote:

    Another warning! I too am a first time poster on this list. Here’s a UCD I came up with for RWT. It perhaps has its short-comings, but it might provide another way of looking at things. Let me know if there are any glaringly obvious faults.

    Error! Filename not specified.

    "It is the tragedy of the world that no one knows what he doesn't know - and the less a man knows, the more sure he is that he knows everything" Joyce Cary.

    Michael Wooldridge

    Information Technology Coordinator

    Mornington Secondary College

    1051 Nepean Highway, Mornington 3931

    (: 03 59700250 6: 03 59700299

    mwo at mornsc.vic.edu.au

    Important - This email and any attachments may be confidential. If received in error, please contact us and delete all copies. Before opening or using attachments check them for viruses and defects. Regardless of any loss, damage or consequence, whether caused by the negligence of the sender or not, resulting directly or indirectly from the use of any attached files our liability is limited to resupplying any affected attachments. Any representations or opinions expressed are those of the individual sender, and not necessarily those of the Department of Education and Early Childhood Development. There, that just about covers everyone's arse but yours, sorry.

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  -- 
  Mark Kelly
  Manager of ICT, Reporting, IT Learning Area
  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

  If not as many people are getting Brasilians, 
  does this mean that waxing is waning?

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