title: Can MySQL Workbench's EER Diagram editor represent tables with relationships that are partial/total disjoint/overlap specialization?
body: <p>I'm studying from "Database Design and Development: A Visual Approach" by Frost, Day, and van Slyke.</p>
  
  <p>It presents relationships in Chapter 5 that indicate partial or total and disjoint or overlap specialization.</p>
  
  <p>Unfortunately, I cannot figure out how to diagram such a thing in MySQL Workbench. A Google search doesn't turn up much either. I found a result about a person asking about them only in SQL to be told that "he doesn't understand the relational database model', which was really annoying.</p>
  
  <p>My book gives examples where this can save diskspace and states that it's a perfectly valid part of the relational model. But it appears to be missing from Workbench.</p>
  
  <p>How can I exhibit specialization in Workbench? The book uses "Student" and "Athlete" and "Councilmember" tables as their example, where a student can be an athlete, student council member, both, or none.</p>
  
  <p>EDIT: Found some links to people asking more or less the same question. Here's <a href="http://forums.mysql.com/read.php?153,276105,276105" rel="nofollow">the link</a> to a person in the mysql forums. He got an annoying reply that basically ignored his question. Here's a link to <a href="http://forums.devshed.com/mysql-help-4/diagram-tool-supporting-subclass-superclass-739609.html" rel="nofollow">the question</a> at DevShed. He got no reply. I now suspect that the functionality does not exist in workbench, despite the name EER suggesting it does.</p>