title: Has HSQLDB some mechanism to save in-memory data to file?
body: <p>Has HSQLDB some mechanism for saving in-memory data to file? </p>
  
  <p>As I know after the server is shutted down, all in-memory data become unaccessible. So I want to save all in-memory data to file.
  Unfortunately I can't use BACKUP mechanism, because it can't be applied for in-memory data.</p>