DB abstraction API thoughts

<?php
$connection = new PDO($dsn);

// 1.
$persons = new Table($connection, 'persons');
$joe = $table->createRow(array('name' => 'Joe'));
$persons->save($joe);

// 2.
$person = array(
    'name' => 'Hello world!',
    'age' => 18
);

// Or:
// $person = new stdclass();
// $person->name = 'Hello world!';
// $person->age = 18;

$persons = new Persons($connection);
$persons->save($person);
$persons->findByLastname(new ORM_Condition(), 'Jensen');

// 3.
// ... hm?
?>