title: how to merge two pouch DB data as in one couch DB
body: <p>This is my Pouch DB data for user "A"</p>
  
  <p>{"people": [{"id": 1,"dept_id": 3,"user": "A",},{"id":2 ,"dept_id": 1,"user": "B",},{"id": 3,"dept_id": 1,"user": "C",}]}</p>
  
  <p>This is my pouch DB data for user "B"</p>
  
  <p>{"people": [{"id": 1,"dept_id": 1,"user": "A"},{"id":2 ,"dept_id": 4,"user": "B"},{"id": 3,"dept_id": 1,"user": "C"}]}</p>
  
  <p>When updating both on the couch, last updated DB content either "A"s DB or "B"s DB which are updated last is stored in Couch. 
  I couldn't merge these to in couch DB.
  <strong>Is it possible to perform partial document updates??</strong>
  Please help me. I'm new to this pouch and couch DB.</p>