title: Active Directory employee information
body: <p>Usually in companies, the employee information is stored on an Active Directory server. So I am guessing when we log on to our machine using ID/pwd, it goes and checks an Active Directory. I am wondering why Active directory is so universal in use when storing employee information.<br>
  Why not use a db? I am aware theoretically of the differences between AD and DB, but from what I know, I do not see why AD is a natural choice for storing employee information.</p>