public function create($columns, $options = 'charset=utf8 engine=innodb')
{
$columnSql = array();
$platform = $this->_connection->platform();
foreach ($columns as $name => $type) {
$columnSql[] = $type->columnSql($name, $platform);
}
$sql = sprintf('CREATE TABLE %s (%s) %s', $this->_name->quoted(), implode(', ', $columnSql), $options);
$this->_connection->execute($sql);
}