Referential constraints link multiple files together in a network, similar to the network for access paths. You might think of this as a relationship network. If possible, you should save all the files in a relationship network in a single save operation.
If you restore files that are in a relationship network during separate restore operations, the server must verify that the relationships are still valid and current. You can avoid this process and improve restore performance if you save and restore relationship networks in a single operation.
The Backup
and Recovery book
has more information about the considerations when restoring relationship
networks.