[Year 12 IT Apps] questions itApps

[Mark Scott]

http://www.nelsonsecondary.com.au/2/497/12/page_proofs.pm

Ch 1 is here and includes the questions

Mark Scott

"The busier you get, the slower you walk" anon

-----Original Message-----
From: itapps-bounces at edulists.com.au [mailto:itapps-bounces at edulists.com.au] On Behalf Of Townsley, Andrew A
Sent: Monday, 22 November 2010 9:39 AM
To: Year 12 IT Applications Teachers' Mailing List
Subject: Re: [Year 12 IT Apps] questions itApps

In the new book what are the questions at the end of Ch1?
I have the old book and want students to complete the questions for Ch1 but I am not sure if they are the same as the old book?


A.Townsley
townsley.andrew.a at edumail.vic.gov.au
Fountain Gate SC



-----Original Message-----
From: itapps-bounces at edulists.com.au on behalf of Mark KELLY
Sent: Mon 22/11/2010 9:23 AM
To: Year 12 IT Applications Teachers' Mailing List
Subject: [Year 12 IT Apps] Logical and physical data dictionaries
 
Hi all.  I've flipped and flopped over the years about whether I thought data dictionaries were logical or physical design tools.  On one page on my Lecture Notes I had them as logical, on another page they were physical. Now I've a sneaking suspicion that *both* are right: there are logical data dictionaries and physical data dictionaries...

To quote
http://www.modernanalyst.com/Careers/InterviewQuestions/tabid/128/articleType/ArticleView/articleId/1392/categoryId/45/What-is-a-logical-data-dictionary-and-what-are-the-benefits-of-maintaining-one.aspx

*"At a logical level, the business representative cares about questions such
as:

What is a Sales Contract?
What are the primary elements of a Sales Contract?
Do these primary elements have attributes or data of their own?
How does a Sales Contract relate to other relevant business entities?

Once data has been logically defined, the definition and relationships between various pieces of logical data rarely need to change.
In contrast, a physical data dictionary allows an organization to describe data in terms of its physical data structure, type, format, and length.
Physical data dictionaries provide programmers of many different systems with a tool to understand how and where the data is stored and how it must be referenced in order to consume it."*

Has anyone else discovered these 2 varieties of data dictionaries?

--
Mark Kelly
Manager Information Systems
Reporting Manager
IT Learning Area Manager

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
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