title: Linked list in data flow diagram
body: <p>Is this correct?<br>
  What i basically want to ask is that- Is it correct to consider a linked list as a data source.
  What happens in this program is that a text files contents are loaded into memory in a linked list. Which does all the processing work and then when the program quits the linked lists are written to the file. In that case is this DFD correct?</p>
  
  <p><img src="https://i.stack.imgur.com/8kbKG.jpg" alt="enter image description here"></p>