Hi people, i'm starting with Zend Framework and I'm a little bit confused with models and relathionships (one-to-many, many-to-many etc).

The "Zend Framework Quick Start" says to create a Zend_Db_Table, a Data Mapper and finally our model class

Suppose we have a database like this:

table A (
id integer primary key,
name varchar(50)
);

table B (
id integer primary key,
a_id integer references A
);

then, i'll create:

Application_Model_DbTable_A extends Zend_Db_Table_Abstract,
Application_Model_AMapper,
Application_Model_A,

Application_Model_DbTable_B extends Zend_Db_Table_Abstract,
Application_Model_BMapper,
Application_Model_B,

if I understood, i've to store the references informations in Application_Model_DbTable_A:

protected $_dependentTables = array('B');

and Application_Model_DbTable_B:

protected $_referenceMap = array(
    'A' => array(
        'columns' => array('a_id'),
        'refTableClass' => 'A',
        'refColums' => array('id')
    )
);

and my models class:

class Application_Model_A
{
    protected $_id;
    protected $_name;

    public function __construct(array $options = null)
    {
        if(is_array($options)) {
        $this->setOptions($options);
        }       
    }

    public function __set($name, $value)
    {
        $method = 'set' . $name;
        if (('mapper' == $name) || !method_exists($this, $method)) {
            throw new Exception('Invalid property');
        }
        $this->$method($value);
    }

    public function __get($name)
    {
        $method = 'get' . $name;
        if (('mapper' == $name) || !method_exists($this, $method)) {
            throw new Exception('Invalid property');
        }
        return $this->$method();
    }

    public function setOptions(array $options)
    {
        $methods = get_class_methods($this);
        foreach ($options as $key => $value) {
            $method = 'set' . ucfirst($key);
            if (in_array($method, $methods)) {
                $this->$method($value);
            }
        }
        return $this;
    }

    public function setName($name)
    {
        $this->_name = (string) $name;
        return $this;
    }

    public function getName()
    {
        return $this->_name;
    } 

    public function setId($id)
    {
        $this->_id = (int) $id;
        return $this;
    }

    public function getId() 
    {
        return $this->_id;
    }

class Application_Model_B
{
    protected $_id;
    protected $_a_id;

    public function __construct(array $options = null)
    {
        if(is_array($options)) {
        $this->setOptions($options);
        }       
    }

    public function __set($name, $value)
    {
        $method = 'set' . $name;
        if (('mapper' == $name) || !method_exists($this, $method)) {
            throw new Exception('Invalid property');
        }
        $this->$method($value);
    }

    public function __get($name)
    {
        $method = 'get' . $name;
        if (('mapper' == $name) || !method_exists($this, $method)) {
            throw new Exception('Invalid property');
        }
        return $this->$method();
    }

    public function setOptions(array $options)
    {
        $methods = get_class_methods($this);
        foreach ($options as $key => $value) {
            $method = 'set' . ucfirst($key);
            if (in_array($method, $methods)) {
                $this->$method($value);
            }
        }
        return $this;
    }

    public function setA_id($a_id)
    {
        $this->_a_id = (int) $a_id;
        return $this;
    }

    public function getA_id()
    {
        return $this->_a_id;
    } 

    public function setId($id)
    {
        $this->_id = (int) $id;
        return $this;
    }

    public function getId() 
    {
        return $this->_id;
    }       

it's that right?