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Wipro ETL Tester Interview Questions, Process, and Tips

Updated 4 Mar 2025

Top Wipro ETL Tester Interview Questions and Answers

  • Q1. What is Primary key and foreign key.guve me example of same in your current project
  • Q2. What is the Difference Between Drop and Truncate Command ?
  • Q3. What are different joins and explain the query for join
View all 8 questions

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 appeared for an interview in Feb 2025.

Round 1 - Technical 

(6 Questions)

  • Q1. Tell me about your experience
  • Ans. 

    I have experience in identifying opportunities, building relationships, and driving growth in various sectors.

    • Developed strategic partnerships that increased revenue by 30% in one year.

    • Conducted market research to identify new business opportunities, leading to the launch of two successful products.

    • Collaborated with cross-functional teams to enhance service offerings, resulting in improved customer satisfaction scores.

    • ...

  • Answered by AI
  • Q2. What is ETL and its architecture
  • Ans. 

    ETL stands for Extract, Transform, Load, a process for data integration and management in data warehousing.

    • Extract: Collecting data from various sources like databases, APIs, or flat files. Example: Pulling sales data from a CRM system.

    • Transform: Cleaning and converting data into a suitable format. Example: Changing date formats or aggregating sales figures.

    • Load: Storing the transformed data into a target database or d...

  • Answered by AI
  • Q3. What is difference between delete and drop
  • Ans. 

    Delete removes specific records from a table; drop removes the entire table structure and its data.

    • DELETE is a DML command used to remove specific rows from a table based on a condition.

    • Example: DELETE FROM Employees WHERE EmployeeID = 1; removes the employee with ID 1.

    • DROP is a DDL command that removes the entire table structure and all its data permanently.

    • Example: DROP TABLE Employees; deletes the entire Employees t...

  • Answered by AI
  • Q4. What are different joins and explain the query for join
  • Ans. 

    Joins are SQL operations that combine rows from two or more tables based on related columns.

    • INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;

    • LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;

    • RIGHT JOIN: Returns all records from the right table and matched re...

  • Answered by AI
  • Q5. What is dwh and Data Mart
  • Ans. 

    DWH (Data Warehouse) is a centralized repository for integrated data, while Data Mart is a subset focused on specific business areas.

    • DWH stores large volumes of historical data from multiple sources for analysis.

    • Data Mart is designed for specific departments, like sales or finance.

    • Example of DWH: A retail company's data warehouse containing sales, inventory, and customer data.

    • Example of Data Mart: A sales data mart tha...

  • Answered by AI
  • Q6. What is Primary key and foreign key.guve me example of same in your current project
  • Ans. 

    Primary keys uniquely identify records in a table, while foreign keys establish relationships between tables.

    • A primary key is a unique identifier for a record in a database table.

    • Example: In a 'Customers' table, 'CustomerID' can be a primary key.

    • A foreign key is a field in one table that links to the primary key of another table.

    • Example: In an 'Orders' table, 'CustomerID' can be a foreign key referencing 'Customers'.

    • Pr...

  • Answered by AI

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.

ETL Tester Jobs at Wipro

View all

Interview questions from similar companies

I applied via Campus Placement and was interviewed in Jul 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Why Java is platform independent?
  • Ans. 

    Java is platform independent due to its bytecode and JVM.

    • Java code is compiled into bytecode which is platform-independent.

    • JVM (Java Virtual Machine) interprets the bytecode and executes it on any platform.

    • JVM acts as an abstraction layer between the Java code and the underlying hardware.

    • This allows Java programs to run on any platform that has a JVM installed.

    • For example, a Java program written on a Windows machine ca...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Java is platform-independent because it does not depend on any type of platform. Hence, Java is platform-independent language. In Java, programs are compiled into byte code and that byte code is platform-independent. ... Any machine to execute the byte code needs the Java Virtual Machine.

Skills evaluated in this interview

I applied via Walk-in and was interviewed before Feb 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Its for FP&A process and the major questions were from the basics of FP&A. How it starts and how its ends and Previous job roles.

Interview Preparation Tips

Interview preparation tips for other job seekers - It's quite a moderate interview but be prepare for more rounds of technical interviews.

I applied via Walk-in and was interviewed in Jan 2019. There were 4 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Work experience in current organisation
  • Q2. What is unique about you
  • Ans. 

    I have a unique combination of analytical skills, creativity, and strong attention to detail.

    • I have a background in both finance and graphic design, allowing me to approach problems from multiple perspectives.

    • I excel at finding innovative solutions to complex problems.

    • I am known for my ability to think outside the box and come up with creative solutions.

    • I have a keen eye for detail and always strive for perfection in m

  • Answered by AI
  • Q3. What you value added to your last organisation
  • Ans. 

    I added value to my last organization by implementing data-driven strategies to improve efficiency and decision-making.

    • Implemented data analytics tools to optimize processes and identify cost-saving opportunities

    • Developed KPI dashboards to track performance and make informed business decisions

    • Led cross-functional teams to successfully launch new products and services

    • Provided training and mentorship to junior analysts t

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be honest and bold

I applied via Campus Placement and was interviewed before Apr 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Tell me about your self?

Interview Preparation Tips

Interview preparation tips for other job seekers - Good

Associate Interview Questions & Answers

TCS user image Anonymous

posted on 12 Oct 2020

I applied via Referral and was interviewed before Oct 2019. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Basic communication check, any thing about your self.

Interview Preparation Tips

Interview preparation tips for other job seekers - If you are bcom/ba/bsc stream then basic communication skills and for Accounts/commerce related must have Academics knowledge. Same for bsc/ba Aacdemigs knowledge.
Excel/ Microsoft office knowledge any computer laungage extra advantage.

I applied via Campus Placement and was interviewed before Jul 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. All questions are related to cost audit

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident whiling answering questions

I appeared for an interview before May 2020.

Interview Questionnaire 

1 Question

  • Q1. Tell about urslf
  • Ans. 

    I am a highly motivated individual with a passion for learning and a strong work ethic.

    • I have a Bachelor's degree in Computer Science from XYZ University.

    • I have completed several internships in software development, including one at ABC Company where I worked on a team to develop a mobile app.

    • I am proficient in several programming languages, including Java, Python, and C++.

    • I am a quick learner and enjoy taking on new c...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Communication

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 Primary key and foreign key.guve me example of same in your current pro...read more
  2. What is the Difference Between Drop and Truncate Comman...read more
  3. What are different joins and explain the query for j...read more

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Wipro ETL Tester Interview Process

based on 3 interviews

1 Interview rounds

  • Technical Round
View more
Wipro ETL Tester Salary
based on 342 salaries
₹3 L/yr - ₹10 L/yr
12% less than the average ETL Tester Salary in India
View more details

Wipro ETL Tester Reviews and Ratings

based on 11 reviews

3.7/5

Rating in categories

3.3

Skill development

3.8

Work-life balance

3.4

Salary

3.5

Job security

3.7

Company culture

3.0

Promotions

3.8

Work satisfaction

Explore 11 Reviews and Ratings
Etl Tester

Hyderabad / Secunderabad,

Chennai

+1

5-10 Yrs

Not Disclosed

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