<br>This DFD (page 14) has got me wondering...<br><br>1. I've always told my kids that each piece of data should have its own arrow. This DFD has multiple data items on the same arrow.<br><br>2. Aren't double-headed arrows forbidden in DFDs?<br>
<br>3. Why are two arrows unlabelled?<br><br>Did someone change the DFD rules when I wasn't watching?<br clear="all"><br>-- <br>Mark Kelly<br>Manager of ICT, Reporting, IT Learning Area<br>McKinnon Secondary College<br>
McKinnon Rd McKinnon 3204, Victoria, Australia<br>Direct line / Voicemail: +613 8520 9085, Fax +613 9578 9253<br><a href="mailto:kel@mckinnonsc.vic.edu.au" target="_blank">kel@mckinnonsc.vic.edu.au</a><br>VCE IT Lecture Notes: <a href="http://vceit.com" target="_blank">http://vceit.com</a><br>
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