title: ASP MVC application's databases not visible in Management Studio
body: <p>I deployed a simple ASP.net MVC application on IIS (7.5 under win 2k8 R2 64 bit), and it created its databases (ApplicationData and the second one with my own data) when I started using the app.
  The databases (.mdf and .ldf files) were created inside App_Data folder.</p>
  
  <p>Application uses entity framework code first approach. I had to change the app pool's identity to Network Service to get the webpage working. I also had to manually create this App_Data directory and assign permissions for Network Service user to modify it's contents.</p>
  
  <p>Now the problem I got is that I can't see those databases in Management Studio (got SQL server 2012 express with advanced services installed). I can attach them manually if not using the webpage for a longer time, otherwise the .mdf files are locked by sqlservr.exe process of Network Service user.
  All the time I got two simultaneously running sqlservr processes. One is run by MSSQLsomething user and the second one by Network Service. However, I got only one instance of SQL server installed (I'm 100% sure of it). </p>
  
  <p>Could anyone explain me how is that possible that Management Studio cannot see those databases even at the moment they're being used (locked by sqlservr.exe process)?</p>