title: Cannot open database "test" requested by the login. The login failed
body: <p>I'm failing this for the quadrizillionth time and I understand I will never become a dba. </p>
  
  <ul>
  <li>I've just restored a database to my local server running SQL Express into "test".</li>
  <li>I've mapped my local db user "testuser" to the database as <strong>db_owner</strong></li>
  <li>Sql server express is running mixed mode authentication</li>
  <li>I'm trying to connect to the database using the following connection string:
  <blockquote>
    <p>"Data Source=(local)\sqlexpress;User Id=testuser;Password=supersecret;Initial Catalog=test;"</li>
    </ul>
  
  <p>Can somebody please tell me what I'm missing here?</p>
  </blockquote></p>