What is Cursor in MogoDB and example Cursor is a POINTER to the result SET of a query. A pointer to result set of a query. Clients can iterate through a cursor to RETRIEVE results. and below is the example to CREATE a Cursor in MongoDB:
var myCursorVar=db.users.find({"age":20}); while (myCursorVar.hasNext()) { print(tojson(myCursorVar.next())); }