[Year 12 IT Apps] First Normal Form

[Savage, John L]

If they  have broken their data into “atomic” fields and have to duplicate an entire row to just add one or two additional pieces of data then it’s 1NF!

0NF
Smith, Sally

043123456

French, English

Epilepsy

Jones, Alan

043112345

Greek, Architecture

Asthma


1NF
Smith

Sally

043123456

French

Epilepsy

Smith

Sally

043123456

English

Epilepsy

Jones

Alan

043112345

Greek

Asthma

Jones

Alan

043112345

Architecture

Asthma


And if Alan and Sally each had multiple ailments the number of rows for these two students would rapidly increase in 1NF.

Laurie Savage
http://accelerus.pvgc.vic.edu.au

From: itapps-bounces at edulists.com.au [mailto:itapps-bounces at edulists.com.au] On Behalf Of Stephanie Polan
Sent: Wednesday, 5 November 2014 8:53 AM
To: Year 12 IT Applications Teachers' Mailing List
Subject: [Year 12 IT Apps] First Normal Form

Good Morning everyone,

I know this is crazy... but my 12's are making me crazy, does anyone have any simple blunt help for Normal Form's ie 1NF 2NF. I've gone through my explanations and Mark Kelly's slide show and my patience and my students are still asking for clarification because of course they can learn and remember it for Friday!!!

Thanks in advance
Stephanie Polan

--
Miss Polan
McKinnon SC

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