title: XML file or database in this particular case (file updated frequently)
body: <p>I have a list of URL and I should loop over them every minute or so and save the last successful access time into an XML file or database. Obviously, the URL and some short description will be saved in file as well.</p>
  
  <p>I'm wondering whether XML files are reliable enough or I'm better with a database? If I must go with the database option, which one?</p>
  
  <p>Please advise. Thanks.</p>