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+
+// Instructions 1
+// 1 Normalize the following blog database and write the DDL scripts to create the database tables:
+
+CREATE TABLE Authors (
+    author_id INT PRIMARY KEY AUTO_INCREMENT,
+    author_name VARCHAR(255) NOT NULL
+);
+
+
+CREATE TABLE Posts (
+    post_id INT PRIMARY KEY AUTO_INCREMENT,
+    author_id INT,
+    title VARCHAR(255) NOT NULL,
+    word_count INT,
+    views INT,
+    FOREIGN KEY (author_id) REFERENCES Authors(author_id)
+);
+
+INSERT INTO Authors (author_name)
+VALUES ('Maria Charlotte'),
+       ('Juan Perez'),
+       ('Gemma Alcocer');
+
+
+-- Inserting data into the Posts table
+INSERT INTO Posts (author_id, title, word_count, views)
+VALUES 
+((SELECT author_id FROM Authors WHERE author_name = 'Maria Charlotte'), 'Best Paint Colors', 814, 14),
+((SELECT author_id FROM Authors WHERE author_name = 'Juan Perez'), 'Small Space Decorating Tips', 1146, 221),
+((SELECT author_id FROM Authors WHERE author_name = 'Maria Charlotte'), 'Hot Accessories', 986, 105),
+((SELECT author_id FROM Authors WHERE author_name = 'Maria Charlotte'), 'Mixing Textures', 765, 22),
+((SELECT author_id FROM Authors WHERE author_name = 'Juan Perez'), 'Kitchen Refresh', 1242, 307),
+((SELECT author_id FROM Authors WHERE author_name = 'Maria Charlotte'), 'Homemade Art Hacks', 1002, 193),
+((SELECT author_id FROM Authors WHERE author_name = 'Gemma Alcocer'), 'Refinishing Wood Floors', 1571, 7542);
+
+
+// Instructions 2
+
+CREATE TABLE Customer (
+    CustomerID INT PRIMARY KEY AUTO_INCREMENT,
+    CustomerName VARCHAR(100),
+    CustomerStatus VARCHAR(20)
+);
+CREATE TABLE Flight (
+    FlightID INT PRIMARY KEY AUTO_INCREMENT,
+    FlightNumber VARCHAR(20),
+    AircraftID INT,
+    TotalAircraftSeats INT,
+    FlightMileage INT,
+    FOREIGN KEY (AircraftID) REFERENCES Aircraft(AircraftID)
+);
+CREATE TABLE Aircraft (
+    AircraftID INT PRIMARY KEY AUTO_INCREMENT,
+    AircraftModel VARCHAR(50)
+);
+CREATE TABLE Customer_Flight (
+    CustomerFlightID INT PRIMARY KEY AUTO_INCREMENT,
+    CustomerID INT,
+    FlightID INT,
+    TotalCustomerMileage INT,
+    FOREIGN KEY (CustomerID) REFERENCES Customer(CustomerID),
+    FOREIGN KEY (FlightID) REFERENCES Flight(FlightID)
+);
+
+INSERT INTO Aircraft (AircraftModel)
+VALUES 
+('Boeing 747'),
+('Airbus A330'),
+('Boeing 777');
+
+INSERT INTO Flight (FlightNumber, AircraftID, TotalAircraftSeats, FlightMileage)
+VALUES
+('DL143', 1, 400, 135),
+('DL122', 2, 236, 4370),
+('DL53', 3, 264, 2078),
+('DL222', 3, 264, 1765),
+('DL37', 1, 400, 531);
+
+INSERT INTO Customer (CustomerName, CustomerStatus)
+VALUES
+('Agustine Riviera', 'Silver'),
+('Alaina Sepulvida', 'None'),
+('Tom Jones', 'Gold'),
+('Sam Rio', 'None'),
+('Jessica James', 'Silver'),
+('Ana Janco', 'Silver'),
+('Jennifer Cortez', 'Gold'),
+('Christian Janco', 'Silver');
+
+INSERT INTO Customer_Flight (CustomerID, FlightID, TotalCustomerMileage)
+VALUES
+(1, 1, 115235),
+(1, 2, 115235),
+(2, 2, 6008),
+(1, 1, 115235),
+(3, 2, 205767),
+(3, 3, 205767),
+(1, 1, 115235),
+(4, 1, 2653),
+(1, 1, 115235),
+(3, 4, 205767),
+(5, 1, 127656),
+(4, 1, 2653),
+(6, 4, 136773),
+(7, 4, 300582),
+(5, 2, 127656),
+(4, 5, 2653),
+(8, 4, 14642);
+
+// Instructions 3
+
+SELECT COUNT(*) AS TotalFlights
+FROM Flight;
+
+// SQL Queries for Average Flight Distance
+
+SELECT AVG(FlightMileage) AS AverageFlightDistance
+FROM Airline;
+
+// SQL Queries for Average Number of Seats
+
+SELECT AVG(TotalAircraftSeats) AS AverageSeats
+FROM Airline;
+
+//SQL Queries for Average Number of Miles Flown by Customers Grouped by Status
+
+SELECT CustomerStatus, AVG(TotalCustomerMileage) AS AverageMileage
+FROM Airline
+GROUP BY CustomerStatus;
+
+// SQL Queries for Maximum Number of Miles Flown by Customers Grouped by Status
+SELECT CustomerStatus, MAX(TotalCustomerMileage) AS MaxMileage
+FROM Airline
+GROUP BY CustomerStatus;
+
+
+// SQL Queries for Total Number of Aircraft with Name Containing Boeing
+SELECT COUNT(DISTINCT Aircraft) AS TotalBoeingAircraft
+FROM Airline
+WHERE Aircraft LIKE '%Boeing%';
+
+
+// SQL Queries for Flights with Distance Between 300 and 2000 Miles
+SELECT FlightNumber, Aircraft, FlightMileage
+FROM Airline
+WHERE FlightMileage BETWEEN 300 AND 2000;
+
+
+// SQL Queries for Average Flight Distance Booked Grouped by Customer Status
+
+SELECT CustomerStatus, AVG(FlightMileage) AS AvgFlightDistance
+FROM Airline
+GROUP BY CustomerStatus;
+
+// SQL Queries for Most Often Booked Aircraft by Gold Members
+SELECT Aircraft, COUNT(Aircraft) AS BookedCount
+FROM Airline
+WHERE CustomerStatus = 'Gold'
+GROUP BY Aircraft
+ORDER BY BookedCount DESC
+LIMIT 1;