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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.
5,612 database developer interview questions shared by candidates
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Basic Understanding on the DBA troubleshooting.
Most of the questions are related to my project. Database developer questions and Hadoop developer questions
I faced few questions in few interviews even in small companies as well as big companies. 1.What is the difference between grid ,cluster and cloud? 2.Have you configured PCP?may I know the process? 3.How to reduce patching downtime? 4.What is Active Data Guard?If disk sorting happening in secondary node then will that read only database can handle that query as temp file will need to be accessed during that disk sorting operation? 5.How to configure a data Guard? 6.How to manage a snapshot database as change of state in the standby node will not hold the data? 7.Explain DRM,Cache Fusion,split brain algorithm please. 8.how to manage loss in archive gap while the database in standby node? 9.what are the types of duplication?what are the mandatory parameter need to configure during duplication? 10.Explain locks and latches 1.What is the difference between materialized view and view? 2.what is the difference between exp and expdp? 3.Can you please tell us the procedure of taking backup of a table using expdp? 4.what is your day to day activities? 5.How to know the business impact of a patch without applying the patch? 6.What is the purpose of catbundle.sql ? 7.What is the difference between generic language patches and one off patches? 8.how to upgrade opatch? 9.How do you configure autoconfig environment using tmplate? 10.How do you rebuild an index?how do you decide that an index rebuild is needed? 11.if there is no sql running in database how do you solve a performance issue? 12.If some Sql is not using an existing index what will you do?What will be possible reason behind that? 13.What are the post cloning issues have you faced? 14.How do you recover when you found blocks are corrupted?How do you able to go back to a previous incarnation? 15.11i and R12 differences? 16.what are the difference between dot tmplate file and dot drv file in each product tops?
what is data sources
My experience, scope, plans.
Explain what a non-clustered index is.
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