HERITS (measurement);
CREATE TABLE measurement_y2006m03 () INHERITS (measurement);
...
CREATE TABLE measurement_y2007m11 () INHERITS (measurement);
CREATE TABLE measurement_y2007m12 () INHERITS (measurement);
CREATE TABLE measurement_y2008m01 () INHERITS (measurement);
</pre><p>
        </p></li><li class="listitem"><p>
         Add non-overlapping table constraints to the child tables to
         define the allowed key values in each.
        </p><p>
         Typical examples would be:
</p><pre class="prog