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Wipro ETL Tester Interview Questions and Answers

Updated 4 Mar 2025

Wipro ETL Tester Interview Experiences

3 interviews found

ETL Tester Interview Questions & Answers

user image Anonymous

posted on 4 Mar 2025

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
-

I was interviewed in Feb 2025.

Round 1 - Technical 

(6 Questions)

  • Q1. Tell me about your experience
  • Q2. What is ETL and its architecture
  • Q3. What is difference between delete and drop
  • Q4. What are different joins and explain the query for join
  • Q5. What is dwh and Data Mart
  • Q6. What is Primary key and foreign key.guve me example of same in your current project

ETL Tester Interview Questions & Answers

user image Anonymous

posted on 9 Oct 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Sep 2024. There was 1 interview round.

Round 1 - Technical 

(4 Questions)

  • Q1. What is the Difference Between Drop and Truncate Command ?
  • Ans. 

    Drop command deletes the table structure along with data, while truncate command deletes only the data.

    • Drop command removes the table structure and all its data, while truncate command only removes the data but keeps the table structure intact.

    • Drop command is a DDL (Data Definition Language) command, while truncate command is a DML (Data Manipulation Language) command.

    • Drop command is slower than truncate command as it ...

  • Answered by AI
  • Q2. What are the Validations you Perform in your Project ?
  • Ans. 

    In my project, I perform validations such as data completeness, data accuracy, data transformation, and data integrity checks.

    • Data completeness checks to ensure all required fields are populated

    • Data accuracy checks to verify the correctness of data

    • Data transformation checks to validate the transformation rules are applied correctly

    • Data integrity checks to maintain data consistency and reliability

  • Answered by AI
  • Q3. What is Star Schema and Snow flake schema ?
  • Ans. 

    Star Schema is a type of database schema where a central fact table is connected to multiple dimension tables. Snowflake Schema is a normalized form of Star Schema where dimension tables are further normalized into sub-dimension tables.

    • Star Schema has a central fact table connected to multiple dimension tables

    • Snowflake Schema is a normalized form of Star Schema with sub-dimension tables

    • Star Schema is denormalized for b...

  • Answered by AI
  • Q4. What is Fact and Dimension Tables
  • Ans. 

    Fact tables contain quantitative data while dimension tables contain descriptive attributes.

    • Fact tables store measurable, quantitative data such as sales revenue or quantity sold

    • Dimension tables store descriptive attributes related to the data in the fact table, such as product name or customer details

    • Fact tables are typically normalized while dimension tables are denormalized for easier querying

    • Example: In a sales dat...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Clear on Basics in First Round then go more Deeper in SQL Part for ETL Testers in Round 2

Skills evaluated in this interview

ETL Tester Interview Questions Asked at Other Companies

asked in Cognizant
Q1. If we have 200 staging tables, 40 dimensions tables and 20 facts ... read more
asked in Cognizant
Q2. 2.Difference between Union and union all,drop and Truncate,star s ... read more
Q3. What is the difference between Test Plan and Test strategy
asked in Cognizant
Q4. Which type of Validation you will do at Landing and staging area.
asked in Infosys
Q5. How do you get data integrity between source and destination, how ... read more

ETL Tester Interview Questions & Answers

user image Anonymous

posted on 4 Mar 2021

I applied via Company Website and was interviewed in Feb 2021. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Data warehouse,data mart,
  • Q2. SQL is the key to clear the interview

Interview Preparation Tips

Interview preparation tips for other job seekers - Basic should be clear.

Interview questions from similar companies

I was interviewed before Sep 2016.

Interview Questionnaire 

1 Question

  • Q1. It was an online technical test. Questions were related to ME outlook, mobile device management , Networking and many more

Interview Preparation Tips

Round: Grammar Round
Experience: It was a written English grammar test to analyse how grammatically sound you are.
Tips: Just revise your basic English grammar like prepositions verbs nd essay/paragraph writing

Round: COMMUNICATION SKILLS Round
Experience: In this round they ask you to speak something on the given topic or sometimes group discussion . Basically they test your vocabulary, your thought process, pronunciation, accent and above all confidence.
Tips: Be confident in whatever you speak. Remember if you get nervous you will need with your words .

Round: Technical Interview
Experience: This was an online test and it had 50 questions all objective types.
Tips: Be technically sound. You cannot Google them as these search engines are blocked

College Name: Babu Banarasi Das National Institute Of Technology And Management (BBDNITM)

Analyst Interview Questions & Answers

HCLTech user image Raj Hrithik

posted on 2 Sep 2017

I was interviewed in Jul 2017.

Interview Questionnaire 

1 Question

  • Q1. Experience summary and the roles

Interview Preparation Tips

Round: Test
Experience: I was allowed to write a test for 2hrs in that each headings seems to be different and also there is a section heading marks
Duration: 2 hours
Total Questions: 70

Round: Technical Interview
Experience: After finishing i was advised to attend 2nd round in that they ask about the detailed experience of my previous company and finally technical terms question also flows

Skills: Logical And Structured Thinking, Communication And Confidence, Attitude, Psychometric Test, Project Management

Interview Questionnaire 

3 Questions

  • Q1. Why IT if your from other branch
  • Ans. 

    To leverage my skills and passion for technology in a field that offers diverse opportunities for growth and innovation.

    • Passion for technology and its advancements

    • Strong analytical and problem-solving skills

    • Desire to work in a field that offers diverse opportunities for growth and innovation

    • Transferable skills from other branch that can be applied in IT

    • Interest in staying updated with the latest trends and developments

  • Answered by AI
  • Q2. Tell me about yourself
  • Q3. Questions on leadership

Interview Preparation Tips

Round: Test
Experience: Basic programming and aptitude
Tips: Programmes like to check the errors or finding output
Duration: 60 minutes
Total Questions: 40

Round: Technical Interview
Experience: Questions related to your field i was electronics so relating that

Round: HR Interview
Experience: HR is very friendly and asks only about your hobbies and life

Skills: basic c and c++
College Name: SATHYABAMA UNIVERSITY

Interview Preparation Tips

Round: interview
Experience: After my first interview, I was straight away moved to the Final round. They came for the analyst roles and were not actually looking for people with hardcore machine learning. I spoke a lot about a project of mine in which I had extensively used machine learning. The interviewers told that the analysts don't use such stuff and later put me in waiting list though my answers to all his questions in statistics were right.
Tips: It's very important to understand the company's profile and then speak accordingly.

College Name: IIT Kanpur

I was interviewed before May 2016.

Interview Questionnaire 

1 Question

  • Q1. Why should we hire you
  • Ans. 

    I have the skills, experience, and passion to excel in this role.

    • I have a strong background in data analysis and have successfully completed numerous projects in the past.

    • I am detail-oriented and have a proven track record of delivering high-quality work under tight deadlines.

    • I am a team player and have excellent communication skills, which allows me to collaborate effectively with colleagues and stakeholders.

  • Answered by AI

I was interviewed before Oct 2016.

Interview Questionnaire 

1 Question

  • Q1. 1. Self introduce. 2. Can do night shift 3. Can go Jaipur if needed 4. Why appoint you 5. What you give to company 6. Some financial question (bookish)

Interview Preparation Tips

Round: HR Interview
Experience: After hr round, then aptitude test which was simple to crack, then operations manager interview, then they keep me waiting till 9 pm to declare That I am selected.
Tips: Go for 11 & 12 class financial management or finance book
Go through about share, debenture, mutual fund, banking system etc.

Round: Test
Experience: Aptitude is easy to crack and at last you have to write essay.
Duration: 1 hour
Total Questions: 60

I was interviewed in Mar 2017.

Interview Questionnaire 

2 Questions

  • Q1. How many samosas does your college canteen sell?
  • Q2. How many chairs are there in your college?

Interview Preparation Tips

Round: Guesstimate Interview
Experience: They asked me the question. I worked my way to the answer. The interviewers were helping me in the process. Cannot disclose the answer due to NDA.
Tips: Think simple. Start with basics and ask questions to the interviewer. More information is revealed only if you ask them right questions,

Skills: Knowledge Of MS Office, Proficiency In English
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Wipro Interview FAQs

How many rounds are there in Wipro ETL Tester interview?
Wipro interview process usually has 1 rounds. The most common rounds in the Wipro interview process are Technical.
How to prepare for Wipro ETL Tester interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Wipro. The most common topics and skills that interviewers at Wipro expect are ETL Testing, ETL, Data Validation, MS Access and MS SQL Server.
What are the top questions asked in Wipro ETL Tester interview?

Some of the top questions asked at the Wipro ETL Tester interview -

  1. What is the Difference Between Drop and Truncate Comman...read more
  2. what is Star Schema and Snow flake schem...read more
  3. What is Fact and Dimension Tab...read more

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Wipro ETL Tester Interview Process

based on 3 interviews

1 Interview rounds

  • Technical Round
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Wipro ETL Tester Salary
based on 343 salaries
₹3 L/yr - ₹10 L/yr
11% less than the average ETL Tester Salary in India
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based on 11 reviews

3.7/5

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