diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..7bc07ec
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Environment-dependent path to Maven home directory
+/mavenHomeManager.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/lab-java-normalization-ddl-aggregation.iml b/.idea/lab-java-normalization-ddl-aggregation.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/lab-java-normalization-ddl-aggregation.iml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..f03c948
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..152076a
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Solutions/airline_data.sql b/Solutions/airline_data.sql
new file mode 100644
index 0000000..1211d91
--- /dev/null
+++ b/Solutions/airline_data.sql
@@ -0,0 +1,20 @@
+INSERT INTO customers (id, name, status, total_mileage) VALUES
+ (1, 'Agustine Riviera', 'Silver', 115235),
+ (2, 'Alaina Sepulvida', NULL, 6008),
+ (3, 'Tom Jones', 'Gold', 205767);
+
+INSERT INTO aircrafts (id, name, total_seats) VALUES
+ (1, 'Boeing 747', 400),
+ (2, 'Airbus A330', 236),
+ (3, 'Boeing 777', 264);
+
+INSERT INTO flights (flight_number, aircraft_id, mileage) VALUES
+ ('DL143', 1, 135),
+ ('DL122', 2, 4370),
+ ('DL53', 3, 2078);
+
+INSERT INTO bookings (id, customer_id, flight_number) VALUES
+ (1, 1, 'DL143'),
+ (2, 1, 'DL122'),
+ (3, 2, 'DL122'),
+ (4, 3, 'DL53');
diff --git a/Solutions/airline_queries.sql b/Solutions/airline_queries.sql
new file mode 100644
index 0000000..3122732
--- /dev/null
+++ b/Solutions/airline_queries.sql
@@ -0,0 +1,38 @@
+-- Total number of flights
+SELECT COUNT(DISTINCT flight_number) FROM flights;
+
+-- Average flight distance
+SELECT AVG(mileage) FROM flights;
+
+-- Average number of seats per aircraft
+SELECT AVG(total_seats) FROM aircrafts;
+
+-- Average miles flown by customers, grouped by status
+SELECT status, AVG(total_mileage) FROM customers GROUP BY status;
+
+-- Max miles flown by customers, grouped by status
+SELECT status, MAX(total_mileage) FROM customers GROUP BY status;
+
+-- Number of aircrafts with "Boeing" in their name
+SELECT COUNT(*) FROM aircrafts WHERE name LIKE '%Boeing%';
+
+-- Flights with distance between 300 and 2000 miles
+SELECT * FROM flights WHERE mileage BETWEEN 300 AND 2000;
+
+-- Average flight distance booked, grouped by customer status
+SELECT c.status, AVG(f.mileage)
+FROM bookings b
+ JOIN customers c ON b.customer_id = c.id
+ JOIN flights f ON b.flight_number = f.flight_number
+GROUP BY c.status;
+
+-- Most booked aircraft among Gold status members
+SELECT a.name, COUNT(*) AS total_bookings
+FROM bookings b
+ JOIN customers c ON b.customer_id = c.id
+ JOIN flights f ON b.flight_number = f.flight_number
+ JOIN aircrafts a ON f.aircraft_id = a.id
+WHERE c.status = 'Gold'
+GROUP BY a.name
+ORDER BY total_bookings DESC
+ LIMIT 1;
diff --git a/Solutions/airline_schema.sql b/Solutions/airline_schema.sql
new file mode 100644
index 0000000..5255000
--- /dev/null
+++ b/Solutions/airline_schema.sql
@@ -0,0 +1,27 @@
+CREATE TABLE customers (
+ id INT PRIMARY KEY,
+ name VARCHAR(100),
+ status VARCHAR(20),
+ total_mileage INT
+);
+
+CREATE TABLE aircrafts (
+ id INT PRIMARY KEY,
+ name VARCHAR(100),
+ total_seats INT
+);
+
+CREATE TABLE flights (
+ flight_number VARCHAR(10) PRIMARY KEY,
+ aircraft_id INT,
+ mileage INT,
+ FOREIGN KEY (aircraft_id) REFERENCES aircrafts(id)
+);
+
+CREATE TABLE bookings (
+ id INT PRIMARY KEY,
+ customer_id INT,
+ flight_number VARCHAR(10),
+ FOREIGN KEY (customer_id) REFERENCES customers(id),
+ FOREIGN KEY (flight_number) REFERENCES flights(flight_number)
+);
diff --git a/Solutions/blog_data.sql b/Solutions/blog_data.sql
new file mode 100644
index 0000000..377983e
--- /dev/null
+++ b/Solutions/blog_data.sql
@@ -0,0 +1,15 @@
+-- Tabla authors
+INSERT INTO authors (id, name) VALUES
+ (1, 'Maria Charlotte'),
+ (2, 'Juan Perez'),
+ (3, 'Gemma Alcocer');
+
+-- Tabla blog_posts
+INSERT INTO blog_posts (id, author_id, title, word_count, views) VALUES
+ (1, 1, 'Best Paint Colors', 814, 14),
+ (2, 2, 'Small Space Decorating Tips', 1146, 221),
+ (3, 1, 'Hot Accessories', 986, 105),
+ (4, 1, 'Mixing Textures', 765, 22),
+ (5, 2, 'Kitchen Refresh', 1242, 307),
+ (6, 1, 'Homemade Art Hacks', 1002, 193),
+ (7, 3, 'Refinishing Wood Floors', 1571, 7542);
diff --git a/Solutions/blog_schema.sql b/Solutions/blog_schema.sql
new file mode 100644
index 0000000..d2c7905
--- /dev/null
+++ b/Solutions/blog_schema.sql
@@ -0,0 +1,13 @@
+CREATE TABLE authors (
+ id INT PRIMARY KEY,
+ name VARCHAR(100) NOT NULL
+);
+
+CREATE TABLE blog_posts (
+ id INT PRIMARY KEY,
+ author_id INT,
+ title VARCHAR(255),
+ word_count INT,
+ views INT,
+ FOREIGN KEY (author_id) REFERENCES authors(id)
+);