diff --git a/Lesson01_Database/assigment-cdb.sql b/Lesson01_Database/assigment-cdb.sql
new file mode 100644
index 0000000..9c0b88e
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+++ b/Lesson01_Database/assigment-cdb.sql
@@ -0,0 +1,163 @@
+-- START RESTAURANT
+-- **INFO
+DROP TABLE IF EXISTS restaurants;
+CREATE TABLE restaurants(
+	res_id SMALLINT NOT NULL AUTO_INCREMENT,
+	res_name VARCHAR(50) ,
+	image VARCHAR(255) ,
+	description VARCHAR(50) ,
+	last_update TIMESTAMP,
+	PRIMARY KEY (res_id)
+);
+
+INSERT INTO restaurants(res_id, res_name, image, description, last_update) 
+VALUES
+	(NULL, 'HAHAHA', 'IMAGE1', 'HAHAHA XINCHAO', NOW()),
+	(NULL, 'HEHEHE', 'IMAGE2', 'HEHEHE XINCHAO', NOW()),
+	(NULL, 'LIULIU', 'IMAGE3', 'LIULIU XINCHAO', NOW()),
+	(NULL, 'BAIBAI', 'IMAGE4', 'BAIBAI XINCHAO', NOW());
+
+
+-- **INTERACTION
+DROP TABLE IF EXISTS like_res;
+CREATE TABLE like_res(
+	user_id INT,
+	res_id INT,
+	date_like DATETIME,
+	last_update TIMESTAMP
+);
+INSERT INTO like_res(user_id, res_id, date_like, last_update)
+VALUES
+	(1, 2, '2022-12-06 13:52:32', NOW()),
+	(2, 1, '2022-12-06 13:51:45', NOW()),
+	(3, 1, '2022-12-06 13:50:51', NOW()),
+	(1, 4, '2022-12-06 13:52:54', NOW());
+
+DROP TABLE IF EXISTS rate_res;
+CREATE TABLE rate_res(
+	user_id INT,
+	res_id INT,
+	amount INT,
+	date_res DATE,
+	last_update TIMESTAMP
+);
+INSERT INTO rate_res(user_id, res_id, amount, date_res, last_update)
+VALUES
+	(1, 2, 80, '2022-12-05 23:45:34', NOW()),
+	(1, 3, 70, '2022-12-05 23:45:34', NOW()),
+	(2, 2, 50, '2022-12-05 23:45:34', NOW()),
+	(3, 1, 30, '2022-12-05 23:45:34', NOW());
+
+-- **FOOD
+DROP TABLE IF EXISTS foods;
+CREATE TABLE foods(
+	food_id SMALLINT NOT NULL AUTO_INCREMENT,
+	food_name VARCHAR(50),
+	image VARCHAR(255),
+	price FLOAT,
+	description VARCHAR(50),
+	type_id SMALLINT,
+	last_update TIMESTAMP,
+	PRIMARY KEY (food_id)
+);
+
+INSERT INTO foods(food_id, food_name, image, price, description, type_id, last_update) 
+VALUES
+	(NULL, 'com chien', 'comchiencamanImage', 300, 'Com Chien ca man', 1, NOW()),
+	(NULL, 'canh rong bien', 'canhrongbienImage', 30, 'Canh rong bien', 3, NOW()),
+	(NULL, 'thit kho', 'thitkhoduaImage', 150, 'thit kho dua', 2, NOW()),
+	(NULL, 'bun xao', 'bunxaochayImage', 250, 'bun xao chay', 1, NOW());
+
+DROP TABLE IF EXISTS food_type;
+CREATE TABLE food_type(
+	type_id SMALLINT NOT NULL AUTO_INCREMENT,
+	type_name VARCHAR(50),
+	last_update TIMESTAMP,
+	PRIMARY KEY (type_id)
+);
+
+INSERT INTO food_type(type_id, type_name, last_update) 
+VALUES
+	(NULL, 'chien/xao', NOW()),
+	(NULL, 'kho', NOW()),
+	(NULL, 'nuoc', NOW()),
+	(NULL, 'do uong', NOW());
+
+-- **ORDERS
+DROP TABLE IF EXISTS orders;
+CREATE TABLE orders(
+	order_id VARCHAR(50) NOT NULL UNIQUE,
+	user_id INT,
+	food_id INT,
+	res_id INT,
+	amount INT,
+	code VARCHAR(50),
+	last_update TIMESTAMP,
+	PRIMARY KEY (order_id)
+);
+
+INSERT INTO orders(order_id, user_id, food_id, res_id, amount, code, last_update) 
+VALUES
+	('OD1', 1, 1, 2, 20, 'ABC', NOW()),
+	('OD2', 2, 3, 1, 30, 'DEF', NOW()),
+	('OD3', 3, 1, 3, 21, 'ABCG', NOW()),
+	('OD4', 1, 4, 4, 40, 'DEFW', NOW());
+-- END RESTAURANT
+
+-- START USERS
+DROP TABLE IF EXISTS users;
+CREATE TABLE users(
+	user_id SMALLINT NOT NULL AUTO_INCREMENT,
+	user_name VARCHAR(50) UNIQUE NOT NULL,
+	user_pass VARCHAR(50) NOT NULL,
+	email VARCHAR(100) UNIQUE NOT NULL,
+	active BOOLEAN,
+	create_date DATETIME,
+	last_update TIMESTAMP,
+	PRIMARY KEY (user_id)
+);
+
+INSERT INTO users(user_id, user_name, user_pass, email, active, create_date, last_update)
+VALUES
+	(NULL, 'hellokitty', 'hellokitty', 'hellokitty@gmail.com', true, '2022-12-06 13:49:20', NOW()),
+	(NULL, 'hellokitty1', 'hellokitty1', 'hellokitty1@gmail.com', true, '2022-12-06 13:49:20', NOW()),
+	(NULL, 'hellokitty2', 'hellokitty2', 'hellokitty2@gmail.com', true, '2022-12-06 13:49:20', NOW()),
+	(NULL, 'hellokitty3', 'hellokitty3', 'hellokitty3@gmail.com', true, '2022-12-06 13:49:20', NOW());
+-- END USERS
+
+
+-- 2 người đẫ like nhà hàng nhiều nhất
+SELECT users.user_id, users.user_name, COUNT(like_res.res_id) AS total_like FROM users
+INNER JOIN like_res
+	ON users.user_id = like_res.user_id
+GROUP BY users.user_id, users.user_name
+ORDER BY total_like DESC
+	LIMIT 5;
+
+
+-- Tìm 2 nhà hàng có lượt like nhiều nhất
+SELECT restaurants.res_id, restaurants.res_name, COUNT(like_res.res_id) as total_like FROM restaurants
+INNER JOIN like_res
+	ON restaurants.res_id = like_res.res_id
+GROUP BY restaurants.res_id, restaurants.res_name
+ORDER BY total_like DESC
+	LIMIT 2;
+
+-- Tìm người đã đặt hàng nhiều nhất
+SELECT users.user_id, SUM(orders.amount) as total_order FROM users
+INNER JOIN orders
+	ON users.user_id = orders.user_id
+GROUP BY users.user_id
+ORDER BY total_order DESC
+	LIMIT 1;
+
+-- Tìm người dùng không hoạt động trong hệ thống
+SELECT users.user_id, users.user_name FROM users
+LEFT JOIN like_res
+	ON users.user_id = like_res.user_id
+LEFT JOIN orders
+	ON users.user_id = orders.user_id
+LEFT JOIN rate_res
+	ON users.user_id = rate_res.user_id
+	WHERE like_res.res_id is null && rate_res.res_id is null && orders.food_id is null;
+