title: Watson Studio Data Refine
body: <p>I have two questions regarding the data refinery process in WS.</p>
  
  <p>I have 200 Columns of data and when it was first loaded into the platform, by default everything is in the string type. How do I</p>
  
  <ol>
  <li>Change columns in a batch</li>
  <li>Specify the data type when I am uploading the data as using a CSV format file.</li>
  </ol>