title: Get number of constraints associated with a column
body: <p>I have been trying to get the number of constraints associated with a column using SQL command. </p>
  
  <p>I would like to know if there exists something like </p>
  
  <pre><code>column.number_of_constraints
  </code></pre>
  
  <p>How can I get this information?</p>
  
  <p>I'm working with an <code>Oracle</code> database.</p>