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<span style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:11pt; color:black">I think Katherine was using the abbreviation NF as Non Functional as in non functional requirement, ie, a requirement in software that is not directly something it explicitly
does; as opposed to NF as Normal Form as in reducing redundancy in a database.<br>
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HTH,<br>
Michael Walker,<br>
Doncaster Secondary College.<br>
<br>
Sent from my Android phone using TouchDown (www.nitrodesk.com)<br>
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<span style="color:black">-----Original Message----- <br>
<b>From:</b> Robert Hind [robert@yinnar.com]<br>
<b>Received:</b> Sunday, 06 Dec 2015, 9:15AM<br>
<b>To:</b> 'Year 12 Software Development Teachers' Mailing List' [sofdev@edulists.com.au]<br>
<b>Subject:</b> Re: [Year 12 SofDev] usability - NF requirement or constraint or both???<br>
<br>
</span></span>
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<div dir="ltr" align="left"><span class="089070622-05122015"><font color="#0000ff" face="Arial">I don't see usabilty itself as an NF requirement. The NF requirement is to minimise data redundancy. Decreased redundancy then increases the usability of the database.</font></span></div>
<div dir="ltr" align="left"><span class="089070622-05122015"><font color="#0000ff" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="089070622-05122015">
<div align="left">
<div dir="ltr" align="left"><span class="141473702-12072015"><font color="#0000ff" size="2" face="Arial">Robert Hind</font></span></div>
<div dir="ltr" align="left"><span class="141473702-12072015"><font color="#0000ff" size="2" face="Arial">Ex Traralgon and Ashwood</font></span></div>
<div dir="ltr" align="left"><span class="141473702-12072015"><font color="#0000ff" size="2" face="Arial">Retired</font></span></div>
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<hr tabindex="-1">
<font size="2" face="Tahoma"><b>From:</b> sofdev-bounces@edulists.com.au [mailto:sofdev-bounces@edulists.com.au]
<b>On Behalf Of </b>Young, Katherine A<br>
<b>Sent:</b> Sunday, 6 December 2015 8:59 AM<br>
<b>To:</b> sofdev@edulists.com.au<br>
<b>Subject:</b> [Year 12 SofDev] usability - NF requirement or constraint or both???<br>
</font><br>
</div>
<div></div>
<div style="word-wrap:break-word">Hi all,
<div><br>
</div>
<div>I’ve attached a graphic organizer that will hopefully get my kids thinking more carefully during their analysis of a problem, need or opportunity. Do others use something similar? I’d love to hear your feedback.</div>
<div><br>
</div>
<div>However, in doing so I realized that usability is listed as both a non-functional requirement AND a constraint. My brain had been thinking that a social constraint such the users’ level of expertise or some other "audience characteristic" would impose
a non-functional requirement in relation to the usability of a solution.</div>
<div><br>
</div>
<div>Could someone please explain the difference between usability as a constraint and as a NF requirement? I know that I WILL be asked the same question :-/</div>
<div><br>
</div>
<div>Thank you!</div>
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<br>
<div><span><br class="x_Apple-interchange-newline">
Regards,</span>
<div><span style="white-space:normal; word-spacing:0px; text-transform:none; color:rgb(0,0,0); font:12px Helvetica; letter-spacing:normal; background-color:rgb(255,255,255); text-indent:0px"><br>
</span><span style="white-space:normal; word-spacing:0px; text-transform:none; color:rgb(0,0,0); font:12px Helvetica; letter-spacing:normal; background-color:rgb(255,255,255); text-indent:0px"><span style="font-variant:normal; white-space:normal; word-spacing:0px; text-transform:none; letter-spacing:normal; line-height:normal; text-indent:0px"><span><span><span style="font-size:12px; font-family:Helvetica; font-style:normal"><span><span><span style="font-weight:normal; color:rgb(0,0,0)"><span><span></span></span></span></span></span></span></span></span></span></span></div>
</div>
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<div><img src="cid:089070622@05122015-3766"> </div>
<div style="word-wrap:break-word">
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<div><span style="white-space:normal; word-spacing:0px; text-transform:none; color:rgb(0,0,0); font:12px Helvetica; letter-spacing:normal; background-color:rgb(255,255,255); text-indent:0px"><span style="font-variant:normal; white-space:normal; word-spacing:0px; text-transform:none; letter-spacing:normal; line-height:normal; text-indent:0px"><span><span><span style="font-size:12px; font-family:Helvetica; font-style:normal"><span><span><span style="font-weight:normal; color:rgb(0,0,0)"><span><span></span>
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<br>
<b>Katherine Young</b></span></span></span></span></div>
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