rent partitions.  For
         example, one might partition by date ranges, or by ranges of
         identifiers for particular business objects.
         Each range's bounds are understood as being inclusive at the
         lower end and exclusive at the upper end.  For example, if one
         partition's range is from <code class="literal">1</code>
         to <code class="literal">10</code>, and the next one's range is
         from <code class="literal">10</code> to <code class="literal">20</code>, the