title: How are reactive streams used in Slick for inserting data
body: <p>In <a href="http://slick.typesafe.com/doc/3.1.1/dbio.html#streaming" rel="noreferrer">Slick's documentation</a> examples for using Reactive Streams are presented just for reading data as a means of a DatabasePublisher. But what happens when you want to use your database as a Sink and backpreasure based on your insertion rate? </p>
  
  <p>I've looked for equivalent <em>DatabaseSubscriber</em> but it doesn't exist. So the question is, if I have a Source, say:</p>
  
  <p><code>
  val source = Source(0 to 100)
  </code> </p>
  
  <p>how can I crete a Sink with Slick that writes those values into a table with schema:</p>
  
  <p><code>
  create table NumberTable (value INT)
  </code></p>