[Year 12 IT Apps] Sample exam questions andentity-relationship diagrams

[Timmer-Arends]

Hello Mark

I'm curious to know what these conflicting sources are.

I've followed Robert H's link and the page one gets to doesn't actually define them but does describe a (simplified) process to get to each NF - and what one gets from the process does conform with NF defs. The links from this page do go to definitions and they are in agreement with other sources I have looked at. 

Mark K's quote is a definition of 2NF that conforms to other definitions.

The only difference I can see between various versions I have read is the degree of mathematical/academic gobbledy-gook involved.

1NF, 2NF and 3NF were defined way back in the seventies and because they were formed from a theoretical basis I don't think they are going to have changed all that much.

About the only thing that seems to have changed greatly is the addition of another three NFs.

I think the issue is a problem with the question, not with the consistency of the definitions. Decoding the definitions for consumption by students is of course another matter...

Regards
Robert T-A


----- Original Message ----- 
  From: Mark Scott 
  To: Year 12 IT Applications Teachers' Mailing List 
  Sent: Friday, April 01, 2011 2:45 PM
  Subject: Re: [Year 12 IT Apps] Sample exam questions andentity-relationship diagrams


  Paula

   

  This is good stuff but we are still struggling with Question 3c

   

  Any chance of a VCAA definition of what actually goes in 1NF, 2NF and 3NF.

   

  The definitions are different depending on which "source" you use.

  thanks
  Mark Scott
  Luther College

  PS I suppose we could all wait for the guru (Mark Kelly) to provide an answer. J




   

   

  From: itapps-bounces at edulists.com.au [mailto:itapps-bounces at edulists.com.au] On Behalf Of Christophersen, Paula P
  Sent: Friday, 1 April 2011 1:32 PM
  To: Year 12 IT Applications Teachers' Mailing List
  Subject: [Year 12 IT Apps] Sample exam questions and entity-relationship diagrams

   

   

  Dear colleagues

   

  The examination specifications and some sample questions focusing on new content in the study design are now on the VCAA website:

   

  http://www.vcaa.vic.edu.au/vcaa/vce/studies/infotech/it-applications/publications/IT-Apps-samp.pdf

   

   

  Structurally the examination remains the same - two sections: Section A multiple choice; Section B short and extended responses. 

   

  I draw your attention to a couple of matters in the sample questions:

  ·         Question 4 focuses on an entity relationship diagram - this hopefully clarifies recent concerns that have been raised.

  ·         Question 7 illustrates one way in which the examination can deal with the choice of different software in Unit 4, Area of Study 1. Here a common question is presented, and students select the software tool to explain their answer.

  ·         Question 9 is an example of an extended response (worth 8 marks) with prompts to guide answers

  ·         Question 12 is an example of the scope of a question on RDBMS - the focus can only extent to what is covered in Unit 3. Again it illustrates an extended response with prompts

   

  Regards

  Paula

   

  Paula Christophersen

  ICT Curriculum Manager

  VCAA

  41 St Andrews Place

  EAST MELBOURNE 3002

  (03) 9651 4378

   

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