title: How to create subclasses using SQL (Oracle SQL Developer)?
body: <p>I have a main table with 2 subclass tables attached in my ER Diagram. How exactly do I go about attaching the subclasses to the main table using SQL? I'm very new to SQL. I'm currently using SQL on the Oracle SQL Developer platform.</p>
  
  <p>Thanks for your help, it's greatly appreciated.</p>