ass="bold"><strong>Reading and writing the backing source file
                 specified by <span class="bold"><strong>-source</strong></span> cannot be
                 transaction protected because it involves filesystem operations that
                 are not part of the Berkeley DB transaction methodology.</strong></span>
                 For this reason, if a temporary database is used to hold the records,
                 it is possible to lose the contents of the <span class="bold"><strong>-source<