title: What does RR represent in date format oracle 10g?
body: <p>The older version of date format is <code>dd-mon-yy</code>. In that case <code>yy</code> represents year. But if we write <code>31-aug-14</code> in oracle 10g the full date format is <code>31-aug-1914</code>. </p>
  
  <p>The newer version of date is <code>dd-mon-rr</code>. So in that date format what does <code>rr</code> represent? I know that it represents 21st century but what does <code>rr</code> mean? Please I want to know. I asked my faculties but they also don't know.</p>