tabaseEnvironment_Backup.htm">Backup(String, BackupOptions)</a> and 
            <a href="M_BerkeleyDB_DatabaseEnvironment_BackupDatabase.htm">BackupDatabase(String, String, Boolean)</a> methods. Implementation 
            of this interface is required if the DatabaseEnvironment.backup or 
            DatabaseEnvironment.backupDatabase target parameter is null.  You 
            configure the environment with this handler via 
            <a href="P_BerkeleyDB_DatabaseEnvironment_BackupHandler.htm">BackupH