title: Which is the best transaction isolation level for insert row?
body: <p>I need to understand which is the best transaction isolation that I can use to do this 2 things:</p>
  
  <ol>
  <li>Save a row in table A</li>
  <li>Save a row in table B</li>
  </ol>
  
  <p>I know that if I use like transaction isolation <code>SERIALIZABLE</code>, it works fine, but I need to know if it is possibile that I can use <code>READ_COMMITED</code>, or <code>REPEATEBLE_READ</code>. I save only two rows in two different table so I'm not doing READ operation, so I think that READ_COMMIT is the best solution? Anyone can help me?</p>