?️ MySQL Database Backup

? Quick Overview

Database backup in MySQL means creating a copy of your database data so it can be restored in case of data loss, corruption, or system failure. Regular backups are critical for data safety and disaster recovery.

? Key Concepts

Backup is usually stored as a .sql file
Most common tool: mysqldump
Backups can be full database, single database, or specific tables
Backups can be restored using MySQL commands

? Syntax / Theory

MySQL uses the mysqldump utility to export database structure and data into a SQL file. This file contains SQL statements like CREATE and INSERT which can recreate the database.

? Code Example(s)

? View Code Example

-- Backup a single MySQL database
mysqldump -u root -p my_database > my_database_backup.sql

? View Code Example

-- Backup all MySQL databases
mysqldump -u root -p --all-databases > all_databases_backup.sql

? View Code Example

-- Backup specific tables from a database
mysqldump -u root -p my_database users orders > tables_backup.sql

? Live Output / Explanation

What Happens?

MySQL asks for your password
A .sql file is created
The file contains SQL queries to recreate data
You can store this file safely or upload to cloud

? Tips & Best Practices

Always test backups by restoring them
Use meaningful file names with dates
Store backups in a different physical location
Automate backups using scheduled tasks

? Try It Yourself / Practice Tasks

Create a sample MySQL database
Insert some records
Take a backup using mysqldump
Delete the database
Restore it from the backup file