class="literal">DB_NODUPDATA</code>
         </p>
            <p>
            If the provided key  already exists 
            in the database, then this method returns 
            <code class="literal">DB_KEYEXIST</code>.
        </p>
            <p>
            If the key does not exist, then the order that the record is put into the database 
            is determined by the 
                
                <span>
                    insertion order in use by the database. If a comparison
             