title: Database storing: pure or encoded?
body: <p>A simple question. How should I store telephone numbers and e-mail adresses in a database ? Just pure text (or numbers) like email@email.com or is it better to encode it with a key (a bit like how passwords are saved in databases). In that case it becomes unreadable (and much longer) unless you know the key.</p>
  
  <p>The only reason for that would be if someone hacks the databsae, and let's say they are many important e-mails and telephone numbers in the database.</p>
  
  <p>How does, for example, linkedIn and facebook keep all this data?</p>