How to select the div inside a div

How to select the div inside a div

Hello EveryoneI am having doubt that in selecting a div because i am not getting what i am expecting to get. Following is the code
  1.  <div id="dynamic">
            <table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
                <thead>
                    <tr>
                        <th width="10%">First Name</th>
                        <th width="10%">Last Name</th>
                        <th width="10%">Address 1</th>
                        <th width="10%">Address 3</th>
                    </tr>
                </thead>
            </table>
            </div>










  2. Am i doing right if i select the table id as $('#example').dataTable( .....................  ?? or do i need to give a reference of the parent div also. Please correct me !!! Thanks !!!!