// Note that this sample code does NOT account for the DB table and column
// creation work that CCK does to decide whether things should go into the 
// content_type_foo table, or a dedicated side table for the field. Triggering
// those CCK table/field creation functions still needs to be solved but this
// stuff should work OK to map to the basic field schema definition stuff 


function foo_node_info() {
  $types = array(
    'foo' => array(
      'name' => t('Node type'),
      'module' => 'foo',
      'description' => t('Stuff goes here!'),
    )
  );


  // Each element in this array has a key that corresponds to
  // a CCK field defined in hook_node_field_info(). This sub-array
  // of the node definition is used to create the *node_field_instance*
  // entry
  $types['foo']['fields']['field_bar'] => array(
      'label' => 'Foo',
      'description' => 'Description of foo',
      'widget_type' => 'text',
      'widget_settings' => array('stuff in this key gets serialized for db insertion'),
      'display_settings' => array('stuff in this key gets serialized for db insertion'),
    ),
  );
  return $types;
}


// Each element in this array has a corresponds to an entry in the
// node_field table.
function foo_node_field_info() {
  $fields = array(
    'field_bar' => array(
      'type' => 'text',
      'required' => TRUE,
      'multiple' => FALSE,
      'db_storage' => TRUE,
      'settings' => array('stuff in this key gets serialized for db insertion'),
    ),
  );
}