SQL Developer Interview Questions & Answers
SQL Developers are responsible for developing SQL databases and writing applications to interface with SQL databases. SQL developers design tables, storing procedures, views and functions, develop MS-SQL queries and procedures, create custom reports, and modify ERP user forms to enhance organizational productivity.
They are also responsible for designing databases and ensuring their stability, reliability and performance.
Whether you're a job seeker preparing to be interviewed for the role of SQL Developer or
an employer preparing to interview candidates for SQL Developer position,
these SQL Developer interview questions will help you prepare yourself for the job interview session.
SQL Developer Interview Questions
Below are a list of some skill-based SQL Developer interview questions.
- Describe your process for troubleshooting a database issue.
- Are you familiar with the SQL language?
- Describe your working experience as an SQL Developer
- What are some of the most important skills you have as an SQL developer?
- How would you describe the relationship between a database and an application?
- What is the most important thing you have learned as an SQL Server developer?
- Provide an example of a time when you had to troubleshoot an issue with a database.
- If a developer asked you what the size limit is for a column in SQL Server, what would your answer be?
- What would you do if you were working on a project and you realized that the database you created wasn’t meeting the company’s needs?
- How well do you know the various features and capabilities of SQL Server 2014?
- Which version of SQL Server do you have the most experience with?
- Do you have experience working with large data sets?
- When is it appropriate to use a clustered index?
- What is the difference between SQL and MySQL?
- We want to make sure our SQL Server databases can scale to meet future demands. What is one thing you would do to ensure this?
- What do you think is the most important thing for a SQL Server developer to keep in mind when building or maintaining a database?
- How often do you perform maintenance on your databases?
- What is a Primary Key?
- What is a Foreign Key?
- What is a UNIQUE constraint?
- There is a bug in your code that is causing problems with the database. What is your process for identifying and fixing the issue?
- What are the standard SQL commands every SQL developer should know?
- Can you explain how a RDBMS organizes data into tables and fields?
- What is a NULL value and how does it differ from a zero value?
- What are SQL Constraints?
- What are Querie and Subqueries?
- Name four ways to maintain data integrity within a RDBMS
- What is the purpose of database normalization and how does it work?
- Explain the difference between an inner join and outer join using an example.
- What are UNION, MINUS and INTERSECT commands?
- What is Cursor? How do you use a Cursor?
- What is an Alias in SQL?
- What is a View?
- What are the various forms of Normalization?
- What are the TRUNCATE, DELETE and DROP statements?
- What is the difference between DROP and TRUNCATE statements?
- What is the difference between DELETE and TRUNCATE statements?
- What are Aggregate and Scalar functions?
- What is User-defined function? What are its various types?
- What is a Stored Procedure?
SQL Developer Interview Questions and Answers
Every interview is different and the questions may vary.
However, there are lots of general questions that get asked at every interview.
Below are some common questions you'd expect during SQL Developer interviews. Click on each question to see how to answer them.
- Why Do You Want To Leave Your Current Job?
- What is Your Greatest Strength?
- Tell Me About Yourself
- Why Do You Want This Job?
- Are You a Leader or a Follower?
- What Is Your Greatest Accomplishment?
- What is Your Salary Expectation?
- Do You Have Any Questions for Us?
- Why Should We Hire You?
- What is Your Greatest Weakness?