mysql> SELECT * FROM Customers;
+------------+-----------+----------+-------------------+------------------------+
| CustomerId | FirstName | LastName | Email             | Address                |
+------------+-----------+----------+-------------------+------------------------+
|          1 | Jessie    | James    | james@yahoo.com   | Str. Lunii, Nr. 9      |
|          2 | Marian    | Radu     | raduX@yahoo.com   | Str. Rapsodiei, Nr. 91 |
|          3 | Graur     | Valeriu  | gv@yahoo.com      | Str. Marti, Nr. 12     |
|          4 | Ioane     | Ioan     | iioan@yahoo.com   | Str. Cometei, Nr. 19   |
|          5 | Granicer  | Tudor    | gtudor@yahoo.com  | Str. Tomis, Nr. 651    |
+------------+-----------+----------+-------------------+------------------------+
5 rows in set (0.00 sec)

mysql> SELECT * FROM Orders;
+---------+------------+----------+----------+------------+
| OrderId | Date       | Quantity | TotalDue | CustomerId |
+---------+------------+----------+----------+------------+
|       1 | 2014-01-09 |       10 |      150 |          2 |
|       2 | 2014-01-09 |        5 |      360 |          5 |
|       3 | 2014-01-09 |        1 |      160 |          6 |
+---------+------------+----------+----------+------------+
3 rows in set (0.00 sec)

mysql> DELETE FROM Orders WHERE OrderId=3
    -> ;
Query OK, 1 row affected (0.00 sec)

mysql> DELETE FROM Orders WHERE OrderId=3
    ->
    -> ;
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT * FROM Orders;
+---------+------------+----------+----------+------------+
| OrderId | Date       | Quantity | TotalDue | CustomerId |
+---------+------------+----------+----------+------------+
|       1 | 2014-01-09 |       10 |      150 |          2 |
|       2 | 2014-01-09 |        5 |      360 |          5 |
+---------+------------+----------+----------+------------+
2 rows in set (0.00 sec)

mysql> ALTER TABLE Orders Engine=InnoDB;
Query OK, 2 rows affected (0.13 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> ALTER TABLE Customers Engine=InnoDB;
Query OK, 5 rows affected (0.05 sec)
Records: 5  Duplicates: 0  Warnings: 0

mysql> SELECT * FROM Orders;
+---------+------------+----------+----------+------------+
| OrderId | Date       | Quantity | TotalDue | CustomerId |
+---------+------------+----------+----------+------------+
|       1 | 2014-01-09 |       10 |      150 |          2 |
|       2 | 2014-01-09 |        5 |      360 |          5 |
+---------+------------+----------+----------+------------+
2 rows in set (0.00 sec)

mysql> SELECT * FROM Customers;
+------------+-----------+----------+-------------------+------------------------+
| CustomerId | FirstName | LastName | Email             | Address                |
+------------+-----------+----------+-------------------+------------------------+
|          1 | Jessie    | James    | james@yahoo.com   | Str. Lunii, Nr. 9      |
|          2 | Marian    | Radu     | raduX@yahoo.com   | Str. Rapsodiei, Nr. 91 |
|          3 | Graur     | Valeriu  | gv@yahoo.com      | Str. Marti, Nr. 12     |
|          4 | Ioane     | Ioan     | iioan@yahoo.com   | Str. Cometei, Nr. 19   |
|          5 | Granicer  | Tudor    | gtudor@yahoo.com  | Str. Tomis, Nr. 651    |
+------------+-----------+----------+-------------------+------------------------+
5 rows in set (0.00 sec)

mysql> INSERT INTO Orders (Date, Quantity, TotalDue, CustomerId) VALUES(NOW(), 3, 400, 3);
Query OK, 1 row affected, 1 warning (0.05 sec)

mysql> SELECT * FROM Orders;
+---------+------------+----------+----------+------------+
| OrderId | Date       | Quantity | TotalDue | CustomerId |
+---------+------------+----------+----------+------------+
|       1 | 2014-01-09 |       10 |      150 |          2 |
|       2 | 2014-01-09 |        5 |      360 |          5 |
|       4 | 2014-01-09 |        3 |      400 |          3 |
+---------+------------+----------+----------+------------+
3 rows in set (0.00 sec)

mysql> INSERT INTO Orders (Date, Quantity, TotalDue, CustomerId) VALUES(NOW(), 6, 450, 9);
Query OK, 1 row affected, 1 warning (0.01 sec)

mysql> SELECT * FROM Orders;
+---------+------------+----------+----------+------------+
| OrderId | Date       | Quantity | TotalDue | CustomerId |
+---------+------------+----------+----------+------------+
|       1 | 2014-01-09 |       10 |      150 |          2 |
|       2 | 2014-01-09 |        5 |      360 |          5 |
|       4 | 2014-01-09 |        3 |      400 |          3 |
|       5 | 2014-01-09 |        6 |      450 |          9 |
+---------+------------+----------+----------+------------+
4 rows in set (0.01 sec)

mysql>