Difficulty: 5/10DROP DATABASE, permissions, data retentionThe DROP DATABASE statement in MySQL is used to delete a database along with all the data such as tables, views, indexes, stored procedures, and constraints.Query:CopyScenario Questions0-2 years experience1You have a local MySQL instance and need to remove a test database called 'temp_db'. Walk me through the exact SQL command you'd run and any safety checks you'd perform first.2If you try to drop a database that still has active connections, what will happen and how would you handle it?3After running DROP DATABASE, how would you confirm that the database was actually deleted?2-5 years experience1Your application started failing after you dropped a database that was referenced by a foreign key in another schema. How would you troubleshoot and fix the issue?2You need to delete a production database but must retain certain tables for audit purposes. Describe how you'd accomplish this with minimal downtime.3During a deployment, a script that drops a database fails halfway due to a permission error. What steps would you take to recover and ensure consistency?5-8 years experience1In a multi‑tenant MySQL cluster where each tenant has its own database, what strategy would you use to safely decommission a tenant's database without affecting other tenants?2Discuss the performance and locking implications of using DROP DATABASE on a very large database with millions of tables, and how you might mitigate downtime.3How would you design an automated safe‑delete workflow that includes backups, approval gates, and rollback for critical databases?8+ years experience1Your organization is migrating from on‑prem MySQL to a cloud‑managed service and needs to retire many legacy databases while preserving compliance records. How would you architect a migration and decommission plan that satisfies audit, data‑residency, and cross‑team coordination requirements?2Explain how you would set up organization‑wide policies—such as IAM roles, resource tagging, and CI/CD checks—to prevent accidental deletion of production databases, and how you'd handle exceptions for emergency deletions.Follow-up QuestionsWhat steps would you take if the DROP DATABASE command fails because of open sessions?How would you verify you can restore the data after a deletion?Can you describe a time you had to roll back a database deletion and how you handled it?Suggest Improvement
