title: Creating (Dropping) Multiple Tables in One Migration
body: <p>Is it possible to create (self.up) multiple tables in one rails three migration.  If this is possible, what is the conventional wisdom on using such an approach.  Something tells me it would be better form to keep one table per migration, but I'd just thought I check with some more seasoned ruby on railers. </p>
  
  <p>Thanks.</p>