eral">NOT NULL</code>
       constraints are included in the definitions of foreign tables imported
       from a foreign server. The default is <code class="literal">true</code>.
      </p></dd></dl></div><p>
    Note that constraints other than <code class="literal">NOT NULL</code> will never be
    imported from the remote tables.  Although <span class="productname">PostgreSQL</span>
    does support check constraints on foreign tables, there is no
    provision for importing them automatically, because 