title: What is the correct and standard way to insert item using B+ tree?
body: <p>The problem is there is a lots of differences answer of b+ tree, due to their different b+ tree algorithms.</p>
  
  <p>I have found some different b+ tree insertion algorithms from internet. shown in below.</p>
  
  <p>Algorithm 1 </p>
  
  <p><a href="https://imgur.com/a/uTtZBb2" rel="nofollow noreferrer">https://imgur.com/a/uTtZBb2</a></p>
  
  <p>Algorithm 2 </p>
  
  <p><a href="https://imgur.com/a/eMpvON5" rel="nofollow noreferrer">https://imgur.com/a/eMpvON5</a></p>
  
  <p>Algorithm 3 </p>
  
  <p><a href="https://imgur.com/a/YznNLwm" rel="nofollow noreferrer">https://imgur.com/a/YznNLwm</a></p>
  
  <p>Algorithm 4 </p>
  
  <p><a href="https://imgur.com/a/dxk6H27" rel="nofollow noreferrer">https://imgur.com/a/dxk6H27</a></p>
  
  <p>I have tried 2 questions get from library. There is 2 possible answers, its confused my mind. </p>
  
  <p><a href="https://imgur.com/a/yXW0gYQ" rel="nofollow noreferrer">https://imgur.com/a/yXW0gYQ</a></p>
  
  <p>Is there any exact answer or there are several possible answers are allowed for b+ tree?</p>
  
  <p>*Sorry i cannot insert image due to not enough reputation.</p>