title: Pl/SQL: Difference between define and declare
body: <pre><code>DEFINE p_annual_sal = 60000
  DECLARE
  v_sal NUMBER(9,2) := &amp;p_annual_sal;
  BEGIN
  v_sal := v_sal/12;
  END;
  /
  </code></pre>
  
  <p>What is the the use of the "Define" word?</p>