[Year 12 SofDev] DFD question

[Robert Mercer]

Hi Mark,

Yep sorry page 73 near the bottom. I guess I will assume it is an error or at least a convention not used by the VCAA. Although that being said I am not sure what the advantage of leaving processes out of a Data Dictionary is, seems to contain some possibly useful data.

>>> Mark Kelly <kel at mckinnonsc.vic.edu.au> 18/09/2008 12:24 pm >>>
Did you mean page 73, or am I using the wrong book?

It's interesting how they explicitly include processes in a data 
dictionary (page 72) - I never have.

I see a data dictionary as a pure and simple table of field names, field 
types, lengths, validation rules perhaps.  Not processes, however: 
that's more for an N-S chart, for example.

Interesting though... might do a bit of digging around in the 'real' IT 
world and see what the conventions are there.

Then again, I really don't like their version of IPO charts on p74.  I 
like IPO to be pure "data / processing / information produced" e.g.

INPUT = Date of birth, Today's date
PROCESSING = (Today-DOB)/365.25
OUTPUT = Age

I really dislike using IPO charts as a uselessly vague version of a 
flowchart e.g. (from page 74)

INPUT = Personal details
PROCESSING = Check details
OUTPUT = Checked details

How pointless is that?

yuk.



Robert Mercer wrote:
> Hello,
> 
> I am looking at the data dictionary on page 25 of the Thomson SD text book and there appears to be process listed "Add New Member". I was of the understanding processes do not get listed in data dictionaries as is indicated by the 2007 exam Section C Question 2 c. Anyone have any thoughts?
> 
> Regards,
>  
> Rob Mercer
> ICT Outreach - Project Officer
> Faculty of Information & Communication Technologies
> Swinburne University of Technology
> PO Box 218
> Hawthorn VIC 3122 Australia
>  
> PH:  +61 3 9214 8768
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> rmercer at swin.edu.au 
> 
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-- 
Mark Kelly
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