title: How to join a stream and dataset?
body: <p>How to join a stream and dataset? 
  I have a stream and I have a static data in a file. I want to enrich the data of stream using the data in the file.</p>
  
  <p>Example: in stream I get airports code and in file I have the name of the airports and codes in file.
  Now I want to join the stream data to the file to form a new stream with airport names. Please provide steps on how to achieve this.</p>