Lab3.02 commited

Week-5-Labs/airlines-database.sql

@@ -0,0 +1,138 @@
+#2.Normalice la siguiente base de datos de aerolíneas y escriba los scripts DDL para crear las tablas de la base de datos:
+CREATE DATABASE airline_database;
+USE airline_database;
+
+CREATE TABLE customers(
+	customer_id INT NOT NULL AUTO_INCREMENT,
+    customer_name VARCHAR (200),
+    customer_status VARCHAR (8),
+    total_customer_milage INT,
+    PRIMARY KEY (customer_id)
+);
+
+CREATE TABLE booking(
+	booking_id INT NOT NULL AUTO_INCREMENT,
+    customer_id INT NOT NULL,
+    flight_id INT NOT NULL,
+    PRIMARY KEY (booking_id),
+    FOREIGN KEY (customer_id) REFERENCES customers(customer_id)
+    ON DELETE CASCADE,
+    FOREIGN KEY (flight_id) REFERENCES flights(flight_id)
+    ON DELETE CASCADE
+);
+
+CREATE TABLE flights(
+	flight_id INT NOT NULL AUTO_INCREMENT,
+	flight_number VARCHAR(5),
+    flight_milage INT,
+    PRIMARY KEY (flight_id)
+);
+
+CREATE TABLE journeys(
+	journey_id INT NOT NULL AUTO_INCREMENT,
+	airplane_id INT NOT NULL,
+    flight_id INT NOT NULL,
+    PRIMARY KEY (journey_id),
+    FOREIGN KEY (airplane_id) REFERENCES airplanes(airplane_id)
+    ON DELETE CASCADE,
+    FOREIGN KEY (flight_id) REFERENCES flights(flight_id)
+    ON DELETE CASCADE
+);
+
+CREATE TABLE airplanes(
+	airplane_id INT NOT NULL AUTO_INCREMENT,
+	aircraft VARCHAR(5),
+    number_seats INT,
+    PRIMARY KEY (airplane_id)
+);
+
+ALTER TABLE airplanes
+MODIFY COLUMN aircraft VARCHAR(12);
+
+INSERT INTO airplanes (aircraft, number_seats) VALUES 
+('Boeing 747', 400),
+('Airbus A330', 236),
+('Boeing 777', 264);
+
+INSERT INTO flights (flight_number, flight_milage) VALUES 
+('DL143', 135),
+('DL122', 4370),
+('DL53', 2078),
+('DL222', 1765),
+('DL37', 531);
+
+INSERT INTO customers (customer_name, customer_status, total_customer_milage) VALUES 
+('Agustine Riviera', 'Silver', 115235),
+('Alaina Sepulvida', 'None', 6008),
+('Tom Jones', 'Gold', 205767),
+('Sam Rio', 'None', 2653),
+('Jessica James', 'Silver', 127656),
+('Ana Janco', 'Silver', 136773),
+('Jennifer Cortez', 'Gold', 300582),
+('Christian Janco', 'Silver', 14642);
+
+INSERT INTO journeys (airplane_id, flight_id) VALUES 
+((SELECT airplane_id FROM airplanes WHERE aircraft = 'Boeing 747' AND number_seats = 400), (SELECT flight_id FROM flights WHERE flight_number = 'DL143')),
+((SELECT airplane_id FROM airplanes WHERE aircraft = 'Airbus A330' AND number_seats = 236), (SELECT flight_id FROM flights WHERE flight_number = 'DL122')),
+((SELECT airplane_id FROM airplanes WHERE aircraft = 'Boeing 777' AND number_seats = 264), (SELECT flight_id FROM flights WHERE flight_number = 'DL53')),
+((SELECT airplane_id FROM airplanes WHERE aircraft = 'Boeing 777' AND number_seats = 264), (SELECT flight_id FROM flights WHERE flight_number = 'DL222')),
+((SELECT airplane_id FROM airplanes WHERE aircraft = 'Boeing 747' AND number_seats = 400), (SELECT flight_id FROM flights WHERE flight_number = 'DL37'));
+
+INSERT INTO booking (customer_id, flight_id) VALUES 
+((SELECT customer_id FROM customers WHERE customer_name = 'Agustine Riviera'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Agustine Riviera'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Alaina Sepulvida'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Tom Jones'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Tom Jones'), (SELECT flight_id FROM flights WHERE flight_number = 'DL53')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Sam Rio'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Sam Rio'), (SELECT flight_id FROM flights WHERE flight_number = 'DL37')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Jessica James'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Jessica James'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Ana Janco'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Jennifer Cortez'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222')),
+((SELECT customer_id FROM customers WHERE customer_name = 'Christian Janco'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222'));
+
+#3.En la base de datos de aerolíneas escriba el script SQL para obtener el número total de vuelos en la base de datos.
+SELECT COUNT(flight_id) AS total_flights FROM flights;
+
+#4.En la base de datos de aerolíneas escriba el script SQL para obtener la distancia promedio de vuelo.
+SELECT CAST(AVG(flight_milage) AS DECIMAL (5,2)) AS average_flights FROM flights;
+
+#5. En la base de datos de aerolíneas escriba el script SQL para obtener el número promedio de asientos.
+SELECT CAST(AVG(number_seats) AS DECIMAL (5,2)) AS average_seats FROM airplanes;
+
+#6. En la base de datos de aerolíneas escriba el script SQL para obtener el número promedio de millas voladas por los clientes agrupados por estatus.
+SELECT customer_status, CAST(AVG(total_customer_milage) AS DECIMAL (15,2)) AS mileage_average_by_status FROM customers GROUP BY customer_status;
+
+#7. En la base de datos de aerolíneas escriba el script SQL para obtener el número máximo de millas voladas por los clientes agrupados por estatus.
+SELECT customer_status, CAST(MAX(total_customer_milage) AS DECIMAL (15,2)) AS mileage_maximun_by_status FROM customers GROUP BY customer_status;
+
+#8. En la base de datos de aerolíneas escriba el script SQL para obtener el número total de aeronaves con un nombre que contiene Boeing.
+SELECT aircraft FROM airplanes WHERE aircraft LIKE 'Boeing%'; 
+
+#9. En la base de datos de aerolíneas escriba el script SQL para encontrar todos los vuelos con una distancia entre 300 y 2000 millas.
+SELECT flight_number, flight_milage AS mileage_between_300_and_2000 FROM flights WHERE flight_milage BETWEEN 300 AND 2000;
+
+#10. En la base de datos de aerolíneas escriba el script SQL para encontrar la distancia promedio de vuelo reservada agrupada por estatus de cliente (esto requerirá una unión).
+SELECT c.customer_status, CAST(AVG(flight_milage) AS DECIMAL (15, 2)) AS flight_mileage_by_customer_status FROM booking b 
+JOIN flights f ON b.flight_id = f.flight_id 
+JOIN customers c ON b.customer_id = c.customer_id
+GROUP BY c.customer_status;
+
+#11. En la base de datos de aerolíneas escriba el script SQL para encontrar la aeronave más a menudo reservada por los miembros de estatus de oro (esto requerirá una unión).
+SELECT a.aircraft, COUNT(*) AS total_reservations
+FROM booking b
+JOIN customers c ON b.customer_id = c.customer_id
+JOIN flights f ON b.flight_id = f.flight_id
+JOIN journeys j ON f.flight_id = j.flight_id
+JOIN airplanes a ON j.airplane_id = a.airplane_id
+WHERE c.customer_status = 'Gold'
+GROUP BY a.aircraft
+ORDER BY total_reservations DESC
+LIMIT 1;
+
+SELECT * FROM customers;
+SELECT * FROM flights;
+SELECT * FROM airplanes;
+SELECT * FROM booking;
+SELECT * FROM journeys;

Week-5-Labs/blog-database.sql

@@ -0,0 +1,15 @@
+CREATE TABLE authors(
+	id INT NOT NULL,
+    name_author VARCHAR(150),
+    PRIMARY KEY (id)
+);
+
+CREATE TABLE books(
+	id INT NOT NULL,
+    title VARCHAR(150),
+    author_id INT NOT NULL,
+    word_count INT,
+    views INT,
+    PRIMARY KEY (id),
+    FOREIGN KEY (author_id) REFERENCES authors(id)
+);