PHP MVC com DAO

[xiscoss]

Alguém poderia me fornecer algum exemplo mais sólido de uma estrutura com os recursos descritos no título? Pois estou desenvolvendo um mini "framework" no meu tempo livre e gostaria de obter uma forma "correta" de como aplicar DAO ao MVC. Abaixo segue o código atual:

Controller

<?php
namespace Main\Controller;

use Main\StartUp;
use Main\Model\Main as Model;
use Alpha\Template\Template;

class Main extends StartUp {
    public function start ()
    {
        $model = new Model();
        $template = new Template();
        $template->title = "test";
        $template->render("main\main\start");
    }

    public function __destruct ()
    {
        parent::__destruct();
    }

    public function __construct ()
    {
        parent::__construct();
    }
}

Model

<?php
namespace Main\Model;

use Main\Model\DAO\Main as DAO;

class Main extends DAO {
    public function __destruct ()
    {
        parent::__destruct();
    }

    public function __construct ()
    {
        parent::__construct();
    }
}

DAO

<?php
namespace Main\Model\DAO;

use Alpha\Database\Database;

class Main extends Database {

    public function delete ()
    {
        $pdo = $this->pdo;
        $pdo->beginTranstaction();
        
        try {
            /*$stmt = "";
            $pdo->prepare($stmt);
            $pdo->bindParam(, , $this->bindType());
            $pdo->execute();*/

            $pdo->commit();
        } catch (PDOException $Exception) {
            $pdo->rollBack();
            throw new PDOException($Exception->getMessage());
        }
    }

    public function update ()
    {
        $pdo = $this->pdo;
        $pdo->beginTranstaction();
        
        try {
            /*$stmt = "";
            $pdo->prepare($stmt);
            $pdo->bindParam(, , $this->bindType());
            $pdo->execute();*/

            $pdo->commit();
        } catch (PDOException $Exception) {
            $pdo->rollBack();
            throw new PDOException($Exception->getMessage());
        }
    }

    public function read ()
    {
        return array();
    }

    public function create ()
    {
        $pdo = $this->pdo;
        $pdo->beginTranstaction();
        
        try {
            /*$stmt = "";
            $pdo->prepare($stmt);
            $pdo->bindParam(, , $this->bindType());
            $pdo->execute();*/

            $pdo->commit();
        } catch (PDOException $Exception) {
            $pdo->rollBack();
            throw new PDOException($Exception->getMessage());
        }
    }

    public function __destruct ()
    {
        parent::__destruct();
    }

    public function __construct ()
    {
        parent::__construct("sqlsrv:Server=192.168.1.3;Database=;", "sa", "", null);
    }
}