          <div>
            <div>
              <h3 class="title"><a id="idp51312816"></a>Group: Constructors and destructor</h3>
            </div>
          </div>
        </div>
        <p>Do not use these constructors to create iterators, but call <a class="link" href="stldb_mapbegin.html" title="begin">db_set::begin()</a>
 or <a class="link" href="stldb_mapbegin.html" title="begin">db_multiset::begin()</a>
 to create valid ones. </p>
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      <div class="sect2" lang="en" xml:lang="en">
      