understanding BTree capacity
<p>What I've understood aboutt BTrees is :</p>

<blockquote>
  <ul>
  <li>if root BTree size is 32, the level 1 have 1024 keys capacity</li>
  <li>the level 2 can sort 1048576  keys</li>
  <li>the real capacity is 512 for level 1 and 524288 on Level 2, because leaves are half filled.</li>
  </ul>
</blockquote>

<p>Am'I Ok or clearly out of concern?</p>
