[Year 12 SofDev] DFD question

[Kent Beveridge]

Data flow to my understanding here..

Waiter to Customer ....Request for order

Customer to Waiter ....Food/Beverage order

Waiter and Customer both 'entities' send data back to the central part of the 'system' (restuarant system) via the waiter



Yep actors are waiter and customer.



I havent started UCD stuff with my guys just yet..focussing on DFD's ...ucd next.



Kent Beveridge
ICT Coordinator & Maths Teacher
kbeveridge at stbc.vic.edu.au<mailto:kbeveridge at stbc.vic.edu.au>

________________________________
From: sofdev-bounces at edulists.com.au [sofdev-bounces at edulists.com.au] on behalf of Mark [mark at vceit.com]
Sent: Saturday, 23 February 2013 7:15 AM
To: Year 12 Software Development Teachers' Mailing List
Subject: Re: [Year 12 SofDev] DFD question

I had the same issue with the DFD and UCD for one of the programming outcomes.
The restaurant customer would be an obvious actor/external entity in a system that takes meal orders.
However since the waiter is the one interacting with the system, and the customer is interacting with the waiter, the customer does not appear at all in the system representation.

Sometimes what seems logical is not as it first appears.


On 22 February 2013 13:14, Simone Tynan <Simone.Tynan at shcy.vic.edu.au<mailto:Simone.Tynan at shcy.vic.edu.au>> wrote:
Hi all,

I am having trouble with aspects of a DFD.

I have a DFD and context diagram in which shows a customer orders a service and it is quoted and carried out.

Similar scenario, except the service is being carried out for a beneficiary. (Think Ninja and assassins. ;-) )

The Customer is providing all details and payments. The beneficiary is not actually adding to or receiving from the system (that I can see).

Are they still added as an external entity? Is there any connection between them and the system?

Many thanks for any input/
Simone

************************************
Simone Tynan
eLearning Leader
LOTE Leader P-12
Simone.Tynan at shcy.vic.edu.au<mailto:Simone.Tynan at shcy.vic.edu.au>


--
--
Mark Kelly
mark AT vceit DOT com
http://vceit.com




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