SQL Server Interview Topic 24: Backup and Recovery Scenarios
This topic checks whether you understand why database backup is serious. Code can be redeployed, but lost data can damage the business.
You should be able to explain backup and recovery from a developer point of view.
Q155. Why is database backup important?
Quick interview answer:
Backup protects business data from accidental delete, wrong update, server failure, or release mistakes. Without a backup, recovery may be impossible. Developers should confirm backup plans before risky production changes.
Study in detail: Backup and Restore - This lesson explains backup basics.
Q156. What is restore in SQL Server?
Quick interview answer:
Restore means bringing a database back from a backup file. It is used when data is lost, corrupted, or when a test environment needs a copy of production-like data.
Study in detail: Backup and Restore - This article explains restore scenarios.
Q157. What would you do if data was deleted by mistake?
Quick interview answer:
First stop making more changes and inform the team. Then identify affected rows, check backup or recovery options, and work with the DBA or senior developer. Do not run random fixes without understanding the damage.
Study in detail: Troubleshooting and Backup and Restore - These lessons explain safe recovery thinking.
Q158. What is point-in-time recovery?
Quick interview answer:
Point-in-time recovery means restoring the database to a specific time before a problem happened. It depends on the backup and log backup strategy used in the environment.
Study in detail: Backup and Restore - This lesson introduces recovery planning.
Q159. What is a developer's role in backup and recovery?
Quick interview answer:
A developer may not manage backups directly, but should understand the risk of data changes, ask about backup before production scripts, and help identify affected data when recovery is needed.
Study in detail: Release and Production Checks - This topic explains production safety from a developer point of view.
Never answer backup questions casually. Say clearly that production data changes need backup awareness and team coordination.