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Sql Developer Interview Questions

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Sql Developer Interview Questions

SQL stands for Structured Query Language, and SQL developers create SQL databases and the applications that work with them. They often use design tables and storing procedures for stability, reliability, and performance. In an SQL developer interview, employers often ask questions about your programming knowledge and problem-solving skills.

Top SQL Developer Interview Questions & How to Answer

Question 1

Question #1: What are the types of keys in SQL, and when would you use them?

How to answer
How to answer: This question lets you demonstrate your knowledge of SQL. Discuss the most common types of SQL keys, and talk about how they can identify rows and columns in tables. Keys work as unique identifiers, allowing users to retrieve data easily.
Question 2

Question #2: What are the types of normalization available in SQL, and how do you use them?

How to answer
How to answer: People use SQL normalization to organize data and reduce redundancies. You can demonstrate your experience by discussing the normalization methods you use most. For example, many developers divide a large table into several smaller ones for easier readability.
Question 3

Question #3: What programming languages are you familiar with?

How to answer
How to answer: Many SQL developers also use JavaScript, HTML, Python, PL/SQL, and other languages. Mention the languages you know and how you used them at your previous job. Also, tell the interviewer about any programming certifications you received.

2,209 sql developer interview questions shared by candidates

How would you identify a long running query? How would would find out the execution plan of that query? If you have a SPID how could you see what query that spid was executing? Name the types of waits in SQL-Server? What do they mean? Is there another way besides SQL Server Profiler, Extended Events and Performance Monitor to see waits, I/O, etc? What is the difference between an Implicit and Explicit query in SQL? With a large database using Blobs what sort of configuration changes do you have to make? How do you setup indexing specifically? What steps do you take to tune SQL queries? How would you go about rewriting a poorly performing query? How could you tell where indexes were missing? Why would you choose SQL-Server over Oracle?
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SQL Server Database Administrator

Interviewed at MetLife

3.7★
Apr 20, 2016

How would you identify a long running query? How would would find out the execution plan of that query? If you have a SPID how could you see what query that spid was executing? Name the types of waits in SQL-Server? What do they mean? Is there another way besides SQL Server Profiler, Extended Events and Performance Monitor to see waits, I/O, etc? What is the difference between an Implicit and Explicit query in SQL? With a large database using Blobs what sort of configuration changes do you have to make? How do you setup indexing specifically? What steps do you take to tune SQL queries? How would you go about rewriting a poorly performing query? How could you tell where indexes were missing? Why would you choose SQL-Server over Oracle?

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Glassdoor has 2,209 interview questions and reports from Sql developer interviews. Prepare for your interview. Get hired. Love your job.