title: Tableau file saving options
body: <p>I am pretty new to tableau. I know tableau has desktop version and tableau server and we have different file options to save file. I needs some help on understanding these file saving options. appreciate any help !</p>
  
  <p>Q1: will file saving  options stay same between desktop version and server version . </p>
  
  <p>Q2: File type options: 
  I am clear on 
  1. workbook (.twb) store visualization without source data
  2. data source (.tds) store information required to access data source, store link to data source without visualization </p>
  
  <p>but have doubts on these file type options: 
  3. what is  bookmark (.tbm) option ?
  4. workbook package : what is the difference between workbook package and workbook ? looks like workbook package cannot save data source information but can save extracted data?</p>
  
  <ol start="5">
  <li>data extract(.tde) 
  when saving data as a data extract, I should choose  connection type as extract not live?  what should I do if I have 1000 rows and 100 columns in my data source, but  only want  500 rows and 50 columns to be extracted  in a csv file?         </li>
  </ol>