Modifying MySQL Database Table Constraints

# Introduction

In this project, you will learn how to modify the `countrylanguage` table in a MySQL database by removing the "not null" constraint from the `IsOfficial` field.

## 👀 Preview

MariaDB [world]> DESC countrylanguage;
+-------------+---------------+------+-----+---------+-------+
| Field       | Type          | Null | Key | Default | Extra |
+-------------+---------------+------+-----+---------+-------+
| CountryCode | char(3)       | NO   | PRI |         |       |
| Language    | char(30)      | NO   | PRI |         |       |
| IsOfficial  | enum('T','F') | YES  |     | NULL    |       |
| Percentage  | decimal(4,1)  | NO   |     | 0.0     |       |
+-------------+---------------+------+-----+---------+-------+
4 rows in set (0.002 sec)

## 🎯 Tasks

In this project, you will learn:

- How to start the MySQL database and access it using the `sudo` command
- How to import the `world.sql` data file into the MySQL database
- How to modify the `countrylanguage` table by removing the "not null" constraint from the `IsOfficial` field
- How to verify the changes made to the `countrylanguage` table

## 🏆 Achievements

After completing this project, you will be able to:

- Understand how to work with MySQL databases using the command-line interface
- Modify table structures by altering the constraints on fields
- Verify the changes made to a table by describing its structure