Add backup script for ShopDB to Reserve and Development

[TrickyTenshi]

No description provided.

[mateacademy-ai-mentor]

Review Summary

I am approving your solution because it implements the required backup and restore procedure: it uses mysqldump, reads credentials from DB_USER and DB_PASSWORD, creates a full backup of ShopDB and restores it into ShopDBReserve, and creates a data-only backup that is restored into ShopDBDevelopment, all in a non-interactive way suitable for a cron job. The script runs without arguments as requested and correctly targets the three databases involved.

The main thing to be aware of is that your “full” backup currently uses --no-create-db, which assumes that ShopDBReserve already has the correct schema; if the goal is a fully self-contained backup including schema, you could remove that option or use something like mysqldump --databases ShopDB so CREATE DATABASE/USE statements and table definitions are included. As a minor robustness improvement, you could add checks at the top of the script to ensure DB_USER and DB_PASSWORD are set, and optionally verify command success (for example with && chaining or checking exit codes) before restoring. Another small enhancement would be to avoid overwriting previous backups by including a timestamp in the backup filenames.

Overall, the core functionality meets the task requirements, and these suggestions are about making the script more resilient and closer to a fully self-contained backup solution. Good work on covering the key steps of the backup process.

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