Good day,
This question is regarding SQL Server which not supported in the QnA forums system yet.
You selected to use the tag "azure-sql-database", which clearly do not fit your case, since Azure Database service control the files for us
I recommend to close this thread and move (re-ask) your question in the following forum:
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?forum=sqlgetstarted