title: Sqlite inserting '(null)' for nil NSStrings
body: <p>While trying to insert records into the database, I leveraged the user to leave some fields empty, i.e. nil strings. Now, when I insert the data into the DB then instead of a nil value I get (null) in each column whose datasource was nil. When I fetch the records from the database and display it to user the values he left empty are now being shown as (null).</p>
  
  <p>I can implement the logic to check for this '(null)' string but I guess there should be some way to handle it at the Database level. I mean if I insert a nil value then it should be nil or empty not (null) string. Can anyone help me out with it?
  Thanks</p>