When sharing snapshots with other AWS accounts, DescribeDBSnapshotAttributes
returns the restore
attribute and a list of IDs for the AWS accounts that are authorized to copy or restore the manual DB snapshot. If all
is included in the list of values for the restore
attribute, then the manual DB snapshot is public and can be copied or restored by all AWS accounts.
To add or remove access for an AWS account to copy or restore a manual DB snapshot, or to make the manual DB snapshot public or private, use the ModifyDBSnapshotAttribute API action.