Select the type of backup you require: Full - creates a complete copy of the selected database. Differential - creates a partial copy of the selected database. Only the changes since the last full backup was made are copied. You must create a full backup of the database before you can perform a differential backup. Transaction log - copies all the log records that have been written to the live transaction log since the first full or differential backup and the last transaction log backup. You can back up the live transaction log only if the database uses the FULL or BULK LOGGED recovery model, and you have previously created a full backup. To truncate the live transaction log, select the Remove inactive entries from transaction log check box. Filegroups or files - creates a backup of selected files and filegroups.