/**
Constructor
Creates the database object to be used later.
@param arg_str_dbprofile the database profile from which the database host, databasename, username and password are extracted.
@see db::__construct().
@access Public.
*/
public function parent_model($arg_str_dbprofile = DEFAULT_DBPROFILE)
{
$this->object();
$this->__DB =& db_factory::get_connection($arg_str_dbprofile);
}