CREATE TABLE `users` (
	`id` int,
	`role_id` int,
	`display_name` varchar(255),
	`email` varchar(255),
	`password` varchar(255)
);
CREATE TABLE `rights` (
	`id` int
);
CREATE TABLE `roles` (
	`id` int,
	`name` varchar(255),
	`description` varchar(255)
);
CREATE TABLE `roles_rights` (
	`right_id` int,
	`role_id` int
);