CREATE TABLE `#__hello` (
  `id` int(11) NOT NULL auto_increment,
  `greeting` varchar(25) NOT NULL,
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=0 DEFAULT CHARSET=utf8;

CREATE TABLE `#__hello_greetings` (
  `hello_greeting_id` SERIAL,
  `greeting` varchar(25) NOT NULL
) ENGINE=MyISAM AUTO_INCREMENT=0 DEFAULT CHARSET=utf8;

see: NameConventionTables

administrator/components/com_hello/hello.php

// Require the base controller

require_once( JPATH_COMPONENT.DS.'controller.php' );

// Require specific controller if requested
if($controller = JRequest::getWord('controller')) {
  $path = JPATH_COMPONENT.DS.'controllers'.DS.$controller.'.php';
  if (file_exists($path)) {
  require_once $path;
  } else {
  $controller = '';
 }
}

// Create the controller
$classname	= 'HellosController'.$controller;
$controller	= new $classname( );

// Perform the Request task
$controller->execute( JRequest::getVar( 'task' ) );

// Redirect if set by the controller
$controller->redirect(); 

// Check if Nooku Framework (codename=Koowa) is active
if(!defined('KOOWA')) {
 JError::raiseWarning(0, JText::_("Koowa wasn't found. Please install the Koowa plugin and enable it."));
 return;
}
// Create the component dispatcher
KFactory::get('admin::com.hello.dispatcher', array('default_view' => 'greetings'))
->dispatch();

see: Entrypoint

jimport('joomla.application.component.controller');

class HellosController extends JController
{
/**
 * Method to display the view
 *
 * @access	public
 */
function display()
{
 parent::display();
 }
}

class HellosControllerHello extends HellosController
{
/**
* constructor (registers additional tasks to methods)
* @return void
*/
function __construct()
{
parent::__construct();

// Register Extra tasks
$this->registerTask( 'add'  , 	'edit' );
}

/**
 * display the edit form
 * @return void
 */
function edit()
{
 JRequest::setVar( 'view', 'hello' );
 JRequest::setVar( 'layout', 'form'  );
 JRequest::setVar('hidemainmenu', 1);
 parent::display();
}

/**
* save a record (and redirect to main page)
* @return void
*/
function save()
{
$model = $this->getModel('hello');

if ($model->store($post)) {
 $msg = JText::_( 'Greeting Saved!' );
} else {
 $msg = JText::_( 'Error Saving Greeting' );
}

// Check the table in so it can be edited.... we are done with it anyway
$link = 'index.php?option=com_hello';
$this->setRedirect($link, $msg);
}

/**
 * remove record(s)
 * @return void
 */
function remove()
{
$model = $this->getModel('hello');
if(!$model->delete()) {
 $msg = JText::_( 'Error: One or More Greetings Could not be Deleted' );
} else {
 $msg = JText::_( 'Greeting(s) Deleted' );
}

$this->setRedirect( 'index.php?option=com_hello', $msg );
}

 /**
  * cancel editing a record
  * @return void
  */
 function cancel()
 {
 $msg = JText::_( 'Operation Cancelled' );
 $this->setRedirect( 'index.php?option=com_hello', $msg );
 }
}

<?php

// we want to use the form controller instead of the default controller, so we add the class
class HelloControllerGreeting extends KControllerForm
{

}

class TableHello extends JTable
{
/**
* Primary Key
*
* @var int
*/
var $id = null;

/**
* @var string
*/
var $greeting = null;

/**
* Constructor
*
* @param object Database connector object
*/
function TableHello(& $db) {
 parent::__construct('#__hello', 'id', $db);
 }
}

jimport('joomla.application.component.model');

class HellosModelHello extends JModel
{
/**
* Constructor that retrieves the ID from the request
*
* @access	public
* @return	void
*/
function __construct()
{
parent::__construct();

$array = JRequest::getVar('cid',  0, '', 'array');
$this->setId((int)$array[0]);
}

/**
* Method to set the hello identifier
*
* @access	public
* @param	int Hello identifier
* @return	void
*/
function setId($id)
{
// Set id and wipe data
$this->_id		= $id;
$this->_data	= null;
}

/**
* Method to get a hello
* @return object with data
*/
function &getData()
{
// Load the data
if (empty( $this->_data )) {
$query = ' SELECT * FROM #__hello '.
'  WHERE id = '.$this->_id;
$this->_db->setQuery( $query );
$this->_data = $this->_db->loadObject();
}
if (!$this->_data) {
$this->_data = new stdClass();
$this->_data->id = 0;
$this->_data->greeting = null;
}
return $this->_data;
}

/**
* Method to store a record
*
* @access	public
* @return	boolean	True on success
*/
function store()
{	
$row =& $this->getTable();

$data = JRequest::get( 'post' );

// Bind the form fields to the hello table
if (!$row->bind($data)) {
$this->setError($this->_db->getErrorMsg());
return false;
}

// Make sure the hello record is valid
if (!$row->check()) {
$this->setError($this->_db->getErrorMsg());
return false;
}

// Store the web link table to the database
if (!$row->store()) {
$this->setError( $row->getErrorMsg() );
return false;
}

return true;
}

/**
* Method to delete record(s)
*
* @access	public
* @return	boolean	True on success
*/
function delete()
{
$cids = JRequest::getVar( 'cid', array(0), 'post', 'array' );

$row =& $this->getTable();

if (count( $cids )) {
foreach($cids as $cid) {
if (!$row->delete( $cid )) {
$this->setError( $row->getErrorMsg() );
return false;
}
}
}
return true;
}
}

jimport( 'joomla.application.component.model' );

class HellosModelHellos extends JModel
{
/**
* Hellos data array
*
* @var array
*/
var $_data;


/**
* Returns the query
* @return string The query to be used to retrieve the rows from the database
*/
function _buildQuery()
{
$query = ' SELECT * FROM #__hello ';
return $query;
}

/**
* Retrieves the hello data
* @return array Array of objects containing the data from the database
*/
function getData()
{
// Lets load the data if it doesn't already exist
if (empty( $this->_data ))
{
$query = $this->_buildQuery();
$this->_data = $this->_getList( $query );
}
return $this->_data;
}
}

jimport( 'joomla.application.component.view' );

class HellosViewHellos extends JView
{

function display($tpl = null)
{
JToolBarHelper::title(   JText::_( 'Hello Manager' ), 'generic.png' );
JToolBarHelper::deleteList();
JToolBarHelper::editListX();
JToolBarHelper::addNewX();

// Get data from the model
$items		= & $this->get( 'Data');

$this->assignRef('items',		$items);

parent::display($tpl);
}
}

<form action="index.php" method="post" name="adminForm">
<div id="editcell">
<table class="adminlist">
<thead>
<tr>
<th width="5">
<?php echo JText::_( 'ID' ); ?>
</th>
<th width="20">
<input type="checkbox" name="toggle" value="" 
onclick="checkAll(<?php echo count( $this->items ); ?>);" />
</th>			
<th>
<?php echo JText::_( 'Greeting' ); ?>
</th>
</tr>
</thead>
<?php
$k = 0;
for ($i=0, $n=count( $this->items ); $i < $n; $i++)	{
$row = &$this->items[$i];
$checked = JHTML::_('grid.id',   $i, $row->id );
$link=JRoute::_('index.php?option=com_hello&controller=hello&task=edit&cid[]='.$row->id);
?>
<tr class="<?php echo "row$k"; ?>">
<td>
<?php echo $row->id; ?>
</td>
<td>
<?php echo $checked; ?>
</td>
<td>
<a href="<?php echo $link; ?>"><?php echo $row->greeting; ?></a>
</td>
</tr>
<?php
$k = 1 - $k;
}
?>
</table>
</div>

<input type="hidden" name="option" value="com_hello" />
<input type="hidden" name="task" value="" />
<input type="hidden" name="boxchecked" value="0" />
<input type="hidden" name="controller" value="hello" />
</form>

<form action="<?= @route()?>" method="post" name="adminForm">
<table class="adminlist">
<thead>
<tr>
<th width="5">
<?= @text('NUM'); ?>
</th>
<th width="20">
<input type="checkbox" name="toggle" value="" onclick="checkAll(<?= count(@$greetings); ?>);" />
</th>			
<th>
<?= @text('Greeting' ); ?>
</th>
</tr>
</thead>
<tbody>
<? $i = 0; $m = 0; ?>
<? foreach (@$greetings as $greeting) : ?>
<tr class="<?php echo 'row'.$m; ?>">
<td align="center"><?= $i + 1; ?></td>
<td align="center">
<?= @helper('grid.id', $i, $greeting->id); ?>
</td>
<td>
<a href="<?=@route('view=greeting&id='.$greeting->id)?>">
<?= $greeting->greeting; ?>
</a>
</td>
</tr>
<? $i = $i + 1; $m = (1 - $m); ?>
<? endforeach; ?>
</table>
<input type="hidden" name="boxchecked" value="0" />
</form>

jimport( 'joomla.application.component.view' );

class HellosViewHello extends JView
{
/**
* display method of Hello view
* @return void
 **/
function display($tpl = null)
{
//get the hello
$hello		=& $this->get('Data');
$isNew		= ($hello->id < 1);

$text = $isNew ? JText::_( 'New' ) : JText::_( 'Edit' );
JToolBarHelper::title(JText::_('Hello').':<small><small>['.$text.']</small></small>');
JToolBarHelper::save();
if ($isNew)  {
 JToolBarHelper::cancel();
} else {
// for existing items the button is renamed `close`
JToolBarHelper::cancel( 'cancel', 'Close' );
}

$this->assignRef('hello',		$hello);

parent::display();
}
}

<form action="index.php" method="post" name="adminForm" id="adminForm">
<div class="col100">
<fieldset class="adminform">
<legend><?php echo JText::_( 'Details' ); ?></legend>

<table class="admintable">
<tr>
<td width="100" align="right" class="key">
<label for="greeting">
<?php echo JText::_( 'Greeting' ); ?>:
</label>
</td>
<td>
<input class="text_area" type="text" name="greeting" 
id="greeting" size="32" maxlength="250" value="<?php echo $this->hello->greeting;?>" />
</td>
</tr>
</table>
</fieldset>
</div>
<div class="clr"></div>
<input type="hidden" name="option" value="com_hello" />
<input type="hidden" name="id" value="<?php echo $this->hello->id; ?>" />
<input type="hidden" name="task" value="" />
<input type="hidden" name="controller" value="hello" />
</form>

<form action="<?= @route('id='.@$greeting->id) ?>" method="post" class="adminform" name="adminForm">

<fieldset class="adminform">
<legend><?= @text('Details' ); ?></legend>

<table class="admintable">
<tr>
<td width="100" align="right" class="key">
<label for="greeting">
<?= @text('Greeting' ); ?>:
</label>
</td>
<td>
<input class="text_area" type="text" name="greeting" 
id="greeting" size="32" maxlength="250" value="<?= @$greeting->greeting; ?>" />
</td>
</tr>
</table>
</fieldset>
<input type="hidden" name="id" value="<?= @$greeting->id; ?>" />
</form>