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Data Unveil ETL Tester Interview Questions and Answers
Data Unveil ETL Tester Interview Experiences
1 interview found
Anonymous
I applied via LinkedIn and was interviewed in Dec 2023. There was 1 interview round.
(3 Questions)
- Q1. 1. Fetch last record of the column. 2. Dense rank vs rank 3. Fetch end of 5 character from the string of the column
- Ans.
The interview questions are related to SQL and data manipulation.
To fetch the last record of a column, you can use the ORDER BY clause with DESC keyword and LIMIT 1.
Dense rank and rank are both ranking functions in SQL, but dense rank assigns consecutive rank numbers to rows, while rank leaves gaps in the ranking sequence.
To fetch the end of 5 characters from a string column, you can use the RIGHT function in SQL.
- Q2. What type of data validation you performed.
- Ans.
I performed various types of data validation including format validation, completeness validation, and referential integrity validation.
Format validation: Ensuring that the data is in the correct format as per the defined specifications. For example, validating that a date field is in the format 'YYYY-MM-DD'.
Completeness validation: Checking if all the required fields are present and populated in the data. For example,...
- Q3. What customer do with data.
- Ans.
Customers use data for various purposes such as analysis, decision-making, reporting, and personalization.
Data is used for analysis to gain insights and identify patterns or trends.
Data helps in decision-making by providing information and supporting evidence.
Data is used for reporting to communicate information and track performance.
Data enables personalization by tailoring products or services based on customer prefe...
Interview Preparation Tips
If I get selected also, I will not be joining this company where basic technical knowledge is lacking.
Skills evaluated in this interview
Interview questions from similar companies
Interview Questionnaire
2 Questions
- Q1. Why should the company choose you ?
- Ans.
I have the necessary skills, experience, and passion to contribute to the company's growth and success.
I have a proven track record of achieving targets and delivering results.
I possess excellent communication and interpersonal skills, which enable me to work effectively with colleagues and clients.
I am a quick learner and can adapt to new technologies and processes easily.
I am passionate about my work and always striv...
- Q2. How are you suitable to the company?
- Ans.
I have the necessary skills, experience, and passion to contribute to the company's growth and success.
I have relevant experience in the industry
I possess the required skills and knowledge for the job
I am a quick learner and can adapt to new situations easily
I am passionate about the company's mission and values
I am a team player and can work collaboratively with others
Interview Preparation Tips
Experience: Though the paper was easy you have to score very high marks to qualify for the next round.
Duration: 30 minutes
Total Questions: 25
Round: Group Discussion
Experience: The GD round consisted of current affair topics. Since topics like these are very popular and everybody likes to talk about them, it is important that you start the topic so as to have a good hold over the group. If not just try and give a direction to the group with valid points so as to become noticeable. Do conclude the discussion.
Round: Interview
Experience: The interview was basically resume based. They asked me about my projects in the domain of finance and were quite impressed by it. They wanted me to discuss all my academic and internship projects in detail. The interview lasted for 30 minutes approximately.They also inquired briefly about me. They also asked me questions about my technical projects though it didn't have anything to do with the profile offered. Their main aim was to know whether I performed well in the tasks assigned to me even if they did not interest me.
Tips: Try not to mention anything about MBA if any one of you is planning to go for it.
College Name: IIT ROORKEE
I appeared for an interview before May 2016.
Interview Questionnaire
4 Questions
- Q1. Tell us about yourself
- Ans.
I am a dedicated and detail-oriented analyst with a strong background in data analysis and problem-solving.
I have a Bachelor's degree in Statistics and experience working with large datasets
Proficient in statistical software such as R and Python
Skilled in identifying trends and patterns to provide actionable insights
Strong communication skills to present findings to stakeholders
- Q2. Why did your CGPA decrease consistently after you 1st year?
- Ans.
My CGPA decreased consistently after my 1st year due to various factors.
I faced challenges in adjusting to the new academic environment in my first year.
I had to balance my studies with extracurricular activities and part-time jobs.
I struggled with certain subjects or courses that were more challenging for me.
I may have experienced personal or health issues that affected my academic performance.
I learned from my mistak...
- Q3. What do you know about us?
- Ans.
The company is a leading financial services firm specializing in investment analysis and research.
Specializes in investment analysis and research
Considered a leader in the financial services industry
Known for providing high-quality financial advice and recommendations
- Q4. You mentioned that you have interest in cricket. Can you name at least 3 cricketers from the 70s?
- Ans.
Some cricketers from the 70s include Sunil Gavaskar, Dennis Lillee, and Clive Lloyd.
Sunil Gavaskar was a legendary Indian batsman known for his technique and consistency.
Dennis Lillee was a fearsome Australian fast bowler who dominated the cricketing world in the 70s.
Clive Lloyd was a West Indian cricketer who captained the team to two consecutive World Cup victories in 1975 and 1979.
Interview Preparation Tips
Duration: 1 hour 30 minutes
Round: Group Discussion
Experience: Fortunately I had a general idea about this topic and had some ideas and examples in mind to support my case. Though, that wasn't the case with everyone else.
Tips: Read Quora answers and be aware of current affairs
Duration: 15 minutes
College Name: Manipal Institute Of Technology, Manipal
Nimish Bajaj
I appeared for an interview in Sep 2016.
Interview Questionnaire
1 Question
- Q1. About internships About projects Use cases Puzzels About your personality
Interview Preparation Tips
Experience: Only 70 filtered through this round out of 500
Tips: Prepare using any CAT book
Duration: 1 hour
Total Questions: 60
Round: Group Activity
Experience: 10 people were called together for this round, 2 or 3 people were selected
Tips: It is a GA
Don't keep a firm stand
Agree with others, have respect
Try to conclude well
Show team work skills
Round: Technical + HR Interview
Experience: Very long and detailed Interview
Tips: Just be honest, the guy taking your interview is leaps and bounds smarter than you
Skills: Analytical, Communication, Team Player
College Name: MSIT GGSIPU
I applied via Naukri.com and was interviewed in Dec 2019. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. About previous job role
- Q2. Guesstimates & Puzzles
- Q3. Case Studies
Interview Preparation Tips
I applied via Job Portal and was interviewed in Feb 2024. There were 2 interview rounds.
Aptitude test are basically asked from reasonable and patterns type questions.
Tooics are given from businesses and case study
Consisted of MCQs on Python and SQL
(1 Question)
- Q1. Based on job experience
(1 Question)
- Q1. Python plus SQL , machine learning,mmm
Case study on different aspects of analytics
Selected
I applied via Naukri.com and was interviewed before Sep 2023. There were 3 interview rounds.
Medium to difficult level
(2 Questions)
- Q1. -----------SQL BASED
- Q2. ------EXPERIENCE BASED
(2 Questions)
- Q1. Culture fit check
- Q2. Behavioral questions
Interview Preparation Tips
(2 Questions)
- Q1. Pandas based basic Data Manipulation Tasks
- Q2. Handling Jsons in python
- Ans.
Python provides built-in libraries like json to handle JSON data easily.
Use json module to load and parse JSON data
Use json.dumps() to convert Python objects into JSON strings
Use json.loads() to convert JSON strings into Python objects
Skills evaluated in this interview
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Data Unveil ETL Tester Interview Process
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