<div dir="ltr">True Boolean data should be true/false, since they are stored as zero (false) or non-zero (true) bits, not as text.<div><div><br></div><div>But other binary options can happen if you encode the data appropriately, e.g. using <font face="courier new, monospace">IsMale</font> or <font face="courier new, monospace">IsFemale</font> would allow a nice, normal Boolean response to the gender question.<div><br></div><div>But, to complicate matters, some databases (like Filemaker) let you choose how true Boolean values are displayed (e.g. M/F, True/False, Yes/No).</div></div></div><div><br></div><div>So it does get murky. </div><div>I wish ITA exams would keep well away from such murky, argumentative, iffy issues and stick to the clear and obvious key knowledge.</div><div><br></div><div>Mark</div><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 7 November 2014 15:06, Christopher Jansen <span dir="ltr"><<a href="mailto:Christopher.Jansen@sjc.vic.edu.au" target="_blank">Christopher.Jansen@sjc.vic.edu.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I think you can use boolean as a data type to describe any field with just two options..
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I would say you can use it for male / female... It would make the database more efficient.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks,
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Chris<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <a href="mailto:itapps-bounces@edulists.com.au" target="_blank">itapps-bounces@edulists.com.au</a> [mailto:<a href="mailto:itapps-bounces@edulists.com.au" target="_blank">itapps-bounces@edulists.com.au</a>]
<b>On Behalf Of </b>Simone Tynan<br>
<b>Sent:</b> Friday, 7 November 2014 2:25 PM<br>
<b>To:</b> <a href="mailto:itapps@edulists.com.au" target="_blank">itapps@edulists.com.au</a><br>
<b>Subject:</b> [Year 12 IT Apps] Boolean?<u></u><u></u></span></p>
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<p class="MsoNormal">Hi everyone.<u></u><u></u></p>
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<p class="MsoNormal">Is it safe to talk yet??<u></u><u></u></p>
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<p class="MsoNormal">I have told my students that boolean data type is ‘true/false’. We discussed how M or F (male or female) is text, not boolean.
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<p class="MsoNormal">The exam, question 5 has Travel-style or Business-style (T or B) as boolean. Have I taught my students incorrectly?<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black">With thanks,<u></u><u></u></span></p>
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<br></blockquote></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><br></div><div>Mark Kelly</div><div>mark AT vceit DOT com</div><div><a href="http://vceit.com" target="_blank">http://vceit.com</a></div><div><br></div><div><i>I love the sound of people's voices after they stop talking.</i></div><div><br></div><div><div>I, Mark Kelly, am entirely responsible for the offensive verbiage I spew forth.</div><div>Have I offended anyone with this post? I would not be surprised.</div><div>If offended, please whinge to me at the email address above. </div><div>Please leave poor Kevork alone. It is not his fault.</div></div></div></div></div></div>
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