diff --git a/answers/exercise1.sql b/answers/exercise1.sql
index e69de29..5a67f00 100644
--- a/answers/exercise1.sql
+++ b/answers/exercise1.sql
@@ -0,0 +1 @@
+CREATE SCHEMA MyNewDB;
diff --git a/answers/exercise10.sql b/answers/exercise10.sql
index e69de29..a5d02e1 100644
--- a/answers/exercise10.sql
+++ b/answers/exercise10.sql
@@ -0,0 +1,3 @@
+SELECT * FROM Students 
+WHERE city = 'Philadelphia'
+OR city = 'Trenton' ;
diff --git a/answers/exercise11.sql b/answers/exercise11.sql
index e69de29..970d496 100644
--- a/answers/exercise11.sql
+++ b/answers/exercise11.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY city;
diff --git a/answers/exercise12.sql b/answers/exercise12.sql
index e69de29..b328e1b 100644
--- a/answers/exercise12.sql
+++ b/answers/exercise12.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY city DESC;
diff --git a/answers/exercise13.sql b/answers/exercise13.sql
index e69de29..8a3c585 100644
--- a/answers/exercise13.sql
+++ b/answers/exercise13.sql
@@ -0,0 +1,2 @@
+SELECT * FROM Students ORDER BY city, country;
+
diff --git a/answers/exercise14.sql b/answers/exercise14.sql
index e69de29..60ae078 100644
--- a/answers/exercise14.sql
+++ b/answers/exercise14.sql
@@ -0,0 +1,2 @@
+SELECT * FROM Students
+WHERE postalCode IS NULL;
diff --git a/answers/exercise15.sql b/answers/exercise15.sql
index e69de29..7df0423 100644
--- a/answers/exercise15.sql
+++ b/answers/exercise15.sql
@@ -0,0 +1,2 @@
+SELECT * FROM Students
+WHERE postalCode IS NOT NULL;
diff --git a/answers/exercise16.sql b/answers/exercise16.sql
index e69de29..c52d34a 100644
--- a/answers/exercise16.sql
+++ b/answers/exercise16.sql
@@ -0,0 +1,2 @@
+UPDATE Students 
+SET city = 'Edinburgh';
diff --git a/answers/exercise17.sql b/answers/exercise17.sql
index e69de29..8b3ad6c 100644
--- a/answers/exercise17.sql
+++ b/answers/exercise17.sql
@@ -0,0 +1,3 @@
+UPDATE Students
+SET city = 'Edinburgh'
+WHERE city = 'Scotland';
diff --git a/answers/exercise18.sql b/answers/exercise18.sql
index e69de29..1500b76 100644
--- a/answers/exercise18.sql
+++ b/answers/exercise18.sql
@@ -0,0 +1,3 @@
+UPDATE Students
+SET city = 'Edingburgh', country = 'Scotland'
+WHERE studentId = 35;
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
index e69de29..982b807 100644
--- a/answers/exercise2.sql
+++ b/answers/exercise2.sql
@@ -0,0 +1 @@
+DROP DATABASE myNewDB;
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
index e69de29..c156499 100644
--- a/answers/exercise3.sql
+++ b/answers/exercise3.sql
@@ -0,0 +1,8 @@
+CREATE SCHEMA userDatabase;
+USE userDatabase;
+CREATE TABLE users
+( userID INTEGER PRIMARY KEY NOT NULL AUTO_INCREMENT,
+lastName VARCHAR(255) NOT NULL,
+firstName VARCHAR(255) NOT NULL,
+address VARCHAR(255) NOT NULL,
+city VARCHAR(255) NOT NULL );
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
index e69de29..c9961fc 100644
--- a/answers/exercise4.sql
+++ b/answers/exercise4.sql
@@ -0,0 +1,2 @@
+USE userDatabase;
+DROP TABLE Users;
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
index e69de29..faa8aff 100644
--- a/answers/exercise5.sql
+++ b/answers/exercise5.sql
@@ -0,0 +1,2 @@
+USE userDatabase;
+TRUNCATE TABLE Users;
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
index e69de29..905e5d8 100644
--- a/answers/exercise6.sql
+++ b/answers/exercise6.sql
@@ -0,0 +1,3 @@
+USE userDatabase;
+ALTER TABLE Users
+ADD birthday DATE;
diff --git a/answers/exercise7.sql b/answers/exercise7.sql
index e69de29..1915d43 100644
--- a/answers/exercise7.sql
+++ b/answers/exercise7.sql
@@ -0,0 +1 @@
+ALTER TABLE Users DROP COLUMN birthday;
diff --git a/answers/exercise8.sql b/answers/exercise8.sql
index e69de29..3f2a2df 100644
--- a/answers/exercise8.sql
+++ b/answers/exercise8.sql
@@ -0,0 +1,2 @@
+INSERT INTO Students (studentName, address, city, postalCode, country)
+VALUES ('Jane Doe', '57 Union St', 'Glasgow', 'G13RB', 'Scotland');
diff --git a/answers/exercise9.sql b/answers/exercise9.sql
index e69de29..5d4e2c5 100644
--- a/answers/exercise9.sql
+++ b/answers/exercise9.sql
@@ -0,0 +1,2 @@
+SELECT * FROM Students 
+WHERE city <> 'Philadelphia' ;
diff --git a/exercise18.sql b/exercise18.sql
new file mode 100644
index 0000000..185e830
--- /dev/null
+++ b/exercise18.sql
@@ -0,0 +1,3 @@
+UPDATE Students 
+SET city = 'Edinburgh', country = 'Scotland'
+WHERE studentId = 35;
diff --git a/exercise19.sql b/exercise19.sql
new file mode 100644
index 0000000..b25ab2e
--- /dev/null
+++ b/exercise19.sql
@@ -0,0 +1,2 @@
+DELETE FROM Students
+WHERE country = 'Scotland';
diff --git a/exercise20.sql b/exercise20.sql
new file mode 100644
index 0000000..e72ad37
--- /dev/null
+++ b/exercise20.sql
@@ -0,0 +1 @@
+DELETE FROM Students;