sudo apt-get update
```bash

Install MySQL 5.7 using command below

```bash
sudo apt-get install mysql-server

sudo systemctl status mysql
```bash

The output should look similar to output below. The output below shows that MySQL is running.

```bash
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2017-07-17 19:33:34 UTC; 1min 27s ago
Main PID: 14443 (mysqld)
CGroup: /system.slice/mysql.service
└─14443 /usr/sbin/mysqld

Jul 17 19:33:33 ubuntu-xenial systemd[1]: Starting MySQL Community Server...
Jul 17 19:33:34 ubuntu-xenial systemd[1]: Started MySQL Community Server.

sudo systemctl stop mysql
```bash

When we re-check the status it will show that the server is stopped.

```bash
$ sudo systemctl status mysql
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: inactive (dead) since Mon 2017-07-17 19:35:56 UTC; 14s ago
Process: 14607 ExecStartPost=/usr/share/mysql/mysql-systemd-start post (code=exited, status=0/SUCCESS)
Process: 14606 ExecStart=/usr/sbin/mysqld (code=exited, status=0/SUCCESS)
Process: 14597 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 14606 (code=exited, status=0/SUCCESS)

Jul 17 19:35:47 ubuntu-xenial systemd[1]: Starting MySQL Community Server...
Jul 17 19:35:48 ubuntu-xenial systemd[1]: Started MySQL Community Server.
Jul 17 19:35:55 ubuntu-xenial systemd[1]: Stopping MySQL Community Server...
Jul 17 19:35:56 ubuntu-xenial systemd[1]: Stopped MySQL Community Server.

sudo systemctl start mysql
```bash

We can also restart mysql using command below

```bash
sudo systemctl restart mysql

$ mysql -u root -p
Enter password:
```bash

Enter `root` user password that we set on installation process.

After successful login we will get to MySQL console.

```bash
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.18-0ubuntu0.16.04.1 (Ubuntu)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

$ mysql_secure_installation

Securing the MySQL server deployment.

Enter password for user root:
```bash

Enter MySQL's root password.

First step is to enable Validate password plugin. We will enable this plugin by entering `Y`.

```bash
VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?

Press y|Y for Yes, any other key for No: Y

There are three levels of password validation policy:

LOW Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary file

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 2
```bash

The script will check for current root password strength.

My current root password strenght is 50, I choose to change the root password that I use.

```bash
Using existing password for root.

Estimated strength of the password: 50
Change the password for root ? ((Press y|Y for Yes, any other key for No) : Y

New password:

Re-enter new password:

Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : Y
```bash

Remove anonymous user by choosing `Y`.

```bash
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : Y
Success.

```bash
Ensure root can only login locally from the database machine, this will block root login remotely.

Remove default test database
```bash

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.

```bash
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Y
- Dropping test database...
Success.

- Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y
Success.

All done!
```bash

We finished securing our MySQL database installation.

## Input Sample Database

MySQL provides several <a href="https://dev.mysql.com/doc/index-other.html">sample database</a>. We will use Sakila sample database to be imported to our mysql database installation.

Download the database dump

```bash
wget -c http://downloads.mysql.com/docs/sakila-db.tar.gz

tar xzf sakila-db.tar.gz
```bash

Go to extracted directory

```bash
cd sakila-db

> mysql -u root -p < sakila-schema.sql
```bash

Input sakila data

```bash
> mysql -u root -p < sakila-data.sql

mysql -u root -p
```bash

After successfully login lets see list of databases.

```sql
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sakila             |
| sys                |
+--------------------+
5 rows in set (0.01 sec)

mysql> use sakila
```bash

Show all tables inside `sakila` database.

```sql
mysql> show tables;
+----------------------------+
| Tables_in_sakila           |
+----------------------------+
| actor                      |
| actor_info                 |
| address                    |
| category                   |
| city                       |
| country                    |
| customer                   |
| customer_list              |
| film                       |
| film_actor                 |
| film_category              |
| film_list                  |
| film_text                  |
| inventory                  |
| language                   |
| nicer_but_slower_film_list |
| payment                    |
| rental                     |
| sales_by_film_category     |
| sales_by_store             |
| staff                      |
| staff_list                 |
| store                      |
+----------------------------+
23 rows in set (0.00 sec)