Posted by: Biruwa April 21, 2008
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jeffali,
We can definitely have foreign key reference as in the following web page (http://www.sqlteam.com/article/implementing-table-inheritance-in-sql-serveryou) you can see that Students, Teachers, and Parents are all "People" and Students, Teachers id have reference to the people's id.
techGuy's diagram looks skewed. U mean to say that u'r sql works as is?