title: Convert Excel to MongoDB
body: <p>I want to move data from Excel files into MongoDB. The Excel data is updated daily so I want to add the new data on daily reads. I'm using Python and so far have only been trying to make a Python dictionary object to represent the Excel data just to understand how MongoDB is storing its data but feel that I misunderstand some vital points.</p>
  
  <p>The situation I want to solve:  </p>
  
  <pre><code>I have MANY Excel files.   
      Each Excel file has MANY sheets,   
          Each sheet has MANY columns.  
  </code></pre>
  
  <p>How do I repeat the reads daily on the same Excel files and add any new data to MongoDB? </p>