Combined Backup of HRDB and FinanceDB

Backup Multiple Databases using mysqldump with --databases Option

Write a MySQL command to back up multiple databases (e.g., "HRDB" and "FinanceDB") in a single command.

Solution:

# This command backs up multiple specified databases (HRDB and FinanceDB)
# mysqldump -u root -p specifies the root user and prompts for a password
# --databases option allows listing specific databases to include in the backup
# > redirects the output to a file named multiple_databases_backup.sql
mysqldump -u root -p --databases HRDB FinanceDB > multiple_databases_backup.sql

Explanation:

• Purpose of the Query:
• To back up several databases in one operation.
• Demonstrates the use of the --databases option to specify multiple targets.
• Key Components:
• Lists the database names after the --databases option.
• Redirects the combined backup into one file.
• Real-World Application:
• Useful for environments managing several related databases that need simultaneous backup.

Note:

• Ensure that the databases are not too large to cause performance issues during backup.
• Store the backup file securely and verify its integrity.

For more Practice: Solve these Related Problems:

• Write a SQL command to back up the databases "HRDB", "FinanceDB", and "LogDB" in a single command.
• Write a SQL command to back up multiple databases while excluding a specific database from the backup.
• Write a SQL command to back up two databases and split the output into separate files for each database.
• Write a SQL command to back up multiple databases and compress the backup file using gzip.

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