Write a query using HAVING clause.
Database Developer Interview Questions
Database Developer Interview Questions
When you interview for a job as a database developer, expect the interviewer to assess how you compile a database system that meets the company's needs while also troubleshooting potential issues. Employers seek candidates who have strong problem-solving and organizational skills as well as possess a strong understanding of database systems.
Top Database Developer Interview Questions & How To Answer
Question 1
Question #1: How would you handle data loss during a migration?
How to answer
How to answer: While this is an issue all database developers seek to avoid, it's not always guaranteed that data remains secure when migration occurs. Answering this question lets the interviewer know how you handle challenges and save a company from certain data disasters. You could also mention steps the company could take to prevent data loss before the migration.
Question 2
Question #2: When do you decide certain databases need upgrading?
How to answer
How to answer: With this open-ended question, interviewers will examine your expertise in the industry. You should know specifics about certain programs and how often they need upgrading. Discuss how you work collaboratively and communicate efficiently with management as to when upgrades need to occur.
Question 3
Question #3: How did you overcome challenges on a recent project?
How to answer
How to answer: Even if you have the best plans for a database project, you might come across issues. Give examples highlighting your problem-solving skills and ability to handle a workload. The interviewer will learn how you operate under pressure and troubleshoot any issues.
5,611 database developer interview questions shared by candidates
Describe the mysql replication. How does the query speed up in MySQL how does the index works.
Assume a table, task, with the following columns: § task_id (int, Not NULL) § task_description (text, Not NULL) § parent_task_id (int, NULL) Write a stored procedure and program (in any language of your choosing) to produce a text based hierarchical tree of the tasks rooted at a given task, using tabs to show the hierarchy. For example, if these rows exist in the task table: task_idtask_descriptionparent_task_id 1Eat LunchNULL 2Choose restaurant1 3Order food1 4Call restaurant3 5Have staff meetingNULL 6Send agenda5 And your program in invoked as follows: tasktree –t 1 It will produce this output: Eat Lunch Choose restaurant Order food Call restaurant
What is your past experience?
previous company role Processes errors regular issues faced
About my prior experience and work related basic knowledge.
How would you design a resilient and scalable backend system to process financial transactions using event-driven architecture?
What is sql injection?
explain a mistake you made and how you dealt with it
How would you fix our database?
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