[Year 12 IT Apps] ERD and... ?

[Mark KELLY]

OK. I'm getting my head around this ERD model we've been given, but the VCAA
ERD does not show cardinality.

So, from VCAA's viewpoint, what tool does show cardinality?  A data
structure diagram?  In that case, what conventions are we to use to show
cardinality?

   - Chen?
   - Barker?
   - IDEF1X?
   - Cachman?
   - Martin / IE / Crow’s foot?
   - Min-Max/ISO?
   - UML?

The only data structure chart in last year's ITA
exam<http://www.vceit.com/postmortems/2010ita/a16.jpg>showed no
cardinality at all.

So - will cardinality be represented in the ITA 2011 exam, or will students
have to infer cardinality?

If cardinality *will* be represented to students, what notation will be
used?

-- 
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

All generalisations are false, except this one.
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