title: How to code a superclass in sql
body: <p>Is there to code a superclass in sql oracle or would you code it as a normal class?</p>
  
  <p>this is a part of my er diagram of my super class:</p>
  
  <p><img src="https://i.stack.imgur.com/BdwLa.jpg" alt="enter image description here"></p>
  
  <p>*Sorry, I'm a beginner with sql</p>