private static function getSchemaClassName($schemaName)
    {
        // Upgrade from pre 2.0.4
        if (strtolower($schemaName) == 'myisam'
            || empty($schemaName)) {
            $schemaName = self::DEFAULT_SCHEMA;
        }

        $class = str_replace(' ', '\\', ucwords(str_replace('_', ' ', strtolower($schemaName))));
        return '\Piwik\Db\Schema\\' . $class;
    }