doctrine2/manual/new/docs/en/object-relational-mapping/table-options.txt

Doctrine offers various table options. All table options can be set via {{Doctrine_Record::option($optionName, $value)}}.

For example if you are using MySQL and want to use INNODB tables it can be done as follows:

<code type="php">
class MyInnoDbRecord extends Doctrine_Record
{
    public function setTableDefinition()
    {
        $this->hasColumn('name', 'string');

        $this->option('type', 'INNODB');
    }
}
</code> 

In the following example we set the collate and character set options:

<code type="php">
class MyCustomOptionRecord extends Doctrine_Record
{
    public function setTableDefinition()
    {
        $this->hasColumn('name', 'string');

        $this->option('collate', 'utf8_unicode_ci');
        $this->option('charset', 'utf8');
    }
}
</code>

Doctrine offers the ability to turn off foreign key constraints for specific Models.

<code type="php">
class MyCustomOptionRecord extends Doctrine_Record
{
    public function setTableDefinition()
    {
        $this->hasColumn('name', 'string');

        $this->setAttribute(Doctrine::ATTR_EXPORT, Doctrine::EXPORT_ALL ^ Doctrine::EXPORT_CONSTRAINTS);
    }
}
</code>