DatabaseFiles Property
This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.
The DatabaseFiles property identifies operating system files that store table or index data as targets of a backup or restore operation.
Setting DatabaseFiles directs backup or restore processing to include only those operating system files listed. To specify an operating system file, use its logical name as visible to Microsoft SQL Server, not its physical or operating system name.
Set DatabaseFiles to an empty string to reset processing and target the entire database.
For more information about setting multistring parameters, see Using SQL-DMO Multistrings.

Note: