title: Laravel4 migration column type of Date of Birth
body: <p>I am very new in laravel.So this is gonna be very basic question.My question is what should be the column type in migration to create <strong>Date of Birth</strong> column.For example,I have created a migration file for Blood Donation,where the columns are something like that,</p>
  
  <pre><code>        $table-&gt;increments('id');
          $table-&gt;unsignedInteger('donner_id');
          $table-&gt;foreign('donner_id')-&gt;references-&gt;('id')-&gt;on('users')-&gt;onDelete('cascade')-&gt;onUpdate('cascade');
          $table-&gt;string('name');
          $table-&gt;string('email')-&gt;unique();
          $table-&gt;string('blood_group');
          $table-&gt;string('phone_number')-&gt;unique();
          $table-&gt;string('location');
          $table-&gt; ------('date_of_birth');
          $table-&gt;timestamps();
  </code></pre>
  
  <p>you can see that laravel4 migration uses 'string'  type instead of 'varchar'.so what should be the type of Date of birth column in <strong>laravel 4</strong> ?</p>