diff --git a/.vscode/settings.json b/.vscode/settings.json
index 375aedb..62fdbf9 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -26,7 +26,7 @@
       "port": 3306,
       "driver": "MySQL",
       "name": "mysql",
-      "database": "default",
+      "database": "gym",
       "username": "root",
       "askForPassword": true
     },
@@ -36,7 +36,7 @@
       "port": 5432,
       "driver": "PostgreSQL",
       "name": "postgresql",
-      "database": "default",
+      "database": "gym",
       "username": "postgres",
       "askForPassword": true
     }
diff --git a/data/01-transaction.sql b/data/01-transaction.sql
new file mode 100644
index 0000000..c43619c
--- /dev/null
+++ b/data/01-transaction.sql
@@ -0,0 +1 @@
+-- Transactions in MySQL
diff --git a/data/01.1-start-transaction.sql b/data/01.1-start-transaction.sql
new file mode 100644
index 0000000..dbe7c6a
--- /dev/null
+++ b/data/01.1-start-transaction.sql
@@ -0,0 +1 @@
+START TRANSACTION;
diff --git a/data/01.2-insert-customers.sql b/data/01.2-insert-customers.sql
new file mode 100644
index 0000000..48732d8
--- /dev/null
+++ b/data/01.2-insert-customers.sql
@@ -0,0 +1,4 @@
+INSERT INTO customers(first_name, last_name, email)
+VALUES('Maria', 'Jones', 'maria@test.com');
+
+SAVEPOINT save_1;
diff --git a/data/01.3-insert-orders.sql b/data/01.3-insert-orders.sql
new file mode 100644
index 0000000..6f098b7
--- /dev/null
+++ b/data/01.3-insert-orders.sql
@@ -0,0 +1,2 @@
+INSERT INTO orders(amount_billed, customer_id)
+VALUES(103.12);
diff --git a/data/01.4-rollback.sql b/data/01.4-rollback.sql
new file mode 100644
index 0000000..0b174c5
--- /dev/null
+++ b/data/01.4-rollback.sql
@@ -0,0 +1 @@
+ROLLBACK TO save_1;
diff --git a/data/01.5-commit.sql b/data/01.5-commit.sql
new file mode 100644
index 0000000..87ef767
--- /dev/null
+++ b/data/01.5-commit.sql
@@ -0,0 +1 @@
+COMMIT;
diff --git a/data/02-transaction.sql b/data/02-transaction.sql
new file mode 100644
index 0000000..520da95
--- /dev/null
+++ b/data/02-transaction.sql
@@ -0,0 +1 @@
+-- Transactions in PostgreSQL
diff --git a/data/02.1-start-transaction.sql b/data/02.1-start-transaction.sql
new file mode 100644
index 0000000..1775571
--- /dev/null
+++ b/data/02.1-start-transaction.sql
@@ -0,0 +1 @@
+BEGIN;
diff --git a/data/02.2-insert-customers.sql b/data/02.2-insert-customers.sql
new file mode 100644
index 0000000..8761ac7
--- /dev/null
+++ b/data/02.2-insert-customers.sql
@@ -0,0 +1,2 @@
+INSERT INTO customers(first_name, last_name, email)
+VALUES('Maria', 'Jones', 'maria@test.com');
diff --git a/data/02.3-insert-orders.sql b/data/02.3-insert-orders.sql
new file mode 100644
index 0000000..6f098b7
--- /dev/null
+++ b/data/02.3-insert-orders.sql
@@ -0,0 +1,2 @@
+INSERT INTO orders(amount_billed, customer_id)
+VALUES(103.12);
diff --git a/data/02.4-rollback.sql b/data/02.4-rollback.sql
new file mode 100644
index 0000000..3b18e77
--- /dev/null
+++ b/data/02.4-rollback.sql
@@ -0,0 +1 @@
+ROLLBACK;
diff --git a/data/02.5-commit.sql b/data/02.5-commit.sql
new file mode 100644
index 0000000..87ef767
--- /dev/null
+++ b/data/02.5-commit.sql
@@ -0,0 +1 @@
+COMMIT;
diff --git a/disclaimer.txt b/disclaimer.txt
new file mode 100644
index 0000000..9b90f5b
--- /dev/null
+++ b/disclaimer.txt
@@ -0,0 +1,4 @@
+# Database
+
+The 'gym' database (created in section 6) will be used.
+Make sure run the commands to create the tables and insert data.