MS SQL Server Interview Questions for Asp.NET Developers

Here are some SQL SERVER questions that I have mostly encountered during my interviews.

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I think if you’re preparing for DotNet interviews these questions will surely help you to succeed.

Also: Here are my top 50 ASP.NET interview questions.

1. Explain difference between clustered index and non clustered index? Why we need indexes?
2. Consider you have created a stored procedure & it is running very slow. How would you troubleshoot and optimize its performance?
3. Difference between DELETE & TRUNCATE?
4. Tell me your approach if you need to design a database schema for an e-commerce website. How would you structure the tables to efficiently handle product orders, customer information, and inventory management?
5. A user reports that they accidentally deleted some critical data from a table. How would you recover the lost data in SQL Server? Is it Possible?
6. Your application is experiencing deadlocks. How would you identify the cause of the deadlocks and implement measures to prevent them?
7. You need to migrate data from an older version of SQL Server to SQL Server 2019. What are the steps you would take to ensure a smooth and successful migration?
8. You are tasked with implementing row-level security in SQL Server to restrict access to certain rows based on user roles. How would you approach this task?
9. Your application needs to generate reports based on complex data calculations and aggregations. How would you optimize SQL queries to improve report generation performance
10. You discover that your SQL Server database is running out of disk space. How would you identify which tables or indexes are consuming the most space, and what steps would you take to free up disk space?
11. You need to implement data encryption for sensitive information stored in your SQL Server database. What encryption techniques and best practices would you use?
12. How to handle multiple languages in database? How would you ensure proper handling of internationalization and localization in SQL Server?

Prepare these questions well and you will excel in interview for sure.

Thanks for reading.