PMA\libraries\DatabaseInterface::isSystemSchema PHP Méthode

    public function isSystemSchema($schema_name, $testForMysqlSchema = false)
    {
        $schema_name = strtolower($schema_name);
        return $schema_name == 'information_schema' || $schema_name == 'performance_schema' || $schema_name == 'mysql' && $testForMysqlSchema || $schema_name == 'sys';
    }