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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I would agree with Brett that existence checking is actually to test if the input exists(i.e. null). This has always been the definition as far as I am aware. Again I agree with Brett that testing against a limited list is an extension of what we normally would say is range checking (checking against a range of values). If the application is checking to see that a file exists, you are still comparing a filename against a list of filenames (limited list). It does not matter if the actual command to do it has the word “exist” as part of it (fileexists or something like that).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>However, Mark’s point WE NEED A GLOSSARY of accepted definitions is vital and I don’t understand why it can’t happen. It would at the least ensure that the examiners are using terms where they and teachers have the same understanding as to what they mean. The more subjective type of definitions, based on our own understandings of terms, only disadvantages students.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paula, we know that you monitor the lists so why can’t we have a list of definitions?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers and merry Christmas<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Don<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> sofdev-bounces@edulists.com.au [mailto:sofdev-bounces@edulists.com.au] <b>On Behalf Of </b>Mark KELLY<br><b>Sent:</b> Tuesday, 14 December 2010 12:00 PM<br><b>To:</b> Year 12 Software Development Teachers' Mailing List<br><b>Subject:</b> [Year 12 SofDev] Validation naming<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi campers. A little audience participation question. Validation types in the study design are:<o:p></o:p></p><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'>existence checking<o:p></o:p></li><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'>range checking<o:p></o:p></li><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1'>type checking<o:p></o:p></li></ul><p class=MsoNormal style='margin-bottom:12.0pt'>The <a href="http://postmortems/2010sd/SD2010exam.htm#c4">2010 SD exam</a> decided to muddy the waters by describing these validation tests:<br><br clear=all><i>Existence - to make sure that the number entered exists on Medicare's database<br>Null - to make sure something has been entered<br></i><br>Now, I've always read "existence" as "has a value been entered?" (like "Null" in the exam question).<br><br>How many of you good folk refer to existence testing as "existence in a limited list", and how many would equate existence testing as null testing?<br><br>If you agree that the exam's terminology is unconventional, I am a bit concerned about it being used in an exam where it could confuse students who were taught the conventional interpretation.<br><br>Now I'm even doubtful about what the study design means by "existence checking" - does it mean "null checking"?<br><br>Have a happy winding-down time, if you're luck enough to have one!<br><br>-- <br>Mark Kelly<br>ICT Manager<br>Reporting Manager<br>IT Learning Area Manager<br><br>McKinnon Secondary College<br>McKinnon Rd McKinnon 3204<br>Victoria, Australia<br>Direct line / Voicemail: +613 8520 9085<br>Fax +613 9578 9253<br><a href="mailto:kel@mckinnonsc.vic.edu.au" target="_blank">kel@mckinnonsc.vic.edu.au</a><br><br>VCE IT Lecture Notes: <a href="http://vceit.com" target="_blank">http://vceit.com</a><br>Moderator: IT Applications Edulist<br><br>I scream a lot to make myself hoarse. I undress to make myself bare. I throw stones at myself to make myself duck.<o:p></o:p></p></div></body></html>