..note::

If ``flush()`` fails, an exception is thrown, which you can catch by wrapping

the ``flush()`` method in a ``try...catch`` block.

If the ``flush()`` call fails, a ``Doctrine\ORM\ORMException`` exception

is thrown, which you can catch by wrapping the ``flush()`` method in a

``try...catch`` block.

Whether creating or updating objects, the workflow is always the same. In

the next section, you'll see how Doctrine is smart enough to automatically