title: What is the best way to store single non-repeating data to a database?
body: <p>What is best practice for storing data in a database which ever only requires a single entry. An example would be configuration data which relates to the entire application/website. Is it common to create a table for this which has only a single entry?</p>
  
  <p>I'm asking under the context of a MongoDB database though I think the question is also valid for SQL databases.</p>