BI Engineer

BI Engineer Interview Questions and Answers

Updated 31 Oct 2024

Q1. which classification model you used to build this project mentioned in ur cv

Ans.

I used a Random Forest classification model to build the project mentioned in my CV.

  • Random Forest is an ensemble learning method that builds multiple decision trees and merges them together to get a more accurate and stable prediction.

  • It is commonly used for classification tasks in machine learning.

  • Random Forest can handle large data sets with higher dimensionality and is less prone to overfitting compared to a single decision tree model.

Q2. Difference b/w cte & temp table in sql & their use case

Ans.

CTE is a temporary result set defined within a query, while temp table is a physical table created in tempdb for temporary storage.

  • CTE stands for Common Table Expression and is defined within a query using the WITH keyword

  • CTEs are mainly used for recursive queries, complex queries, or to improve readability of the query

  • Temp tables are physical tables created in tempdb for temporary storage of data

  • Temp tables are useful when you need to store intermediate results for further p...read more

Q3. describe data validation processes

Ans.

Data validation processes ensure data accuracy and consistency.

  • Performing range checks to ensure data falls within expected values

  • Checking for data type consistency (e.g. ensuring a field is always a number)

  • Validating data against predefined rules or constraints

  • Identifying and handling missing or duplicate data

  • Implementing data cleansing techniques to improve data quality

Q4. etl processes describe

Ans.

ETL processes involve extracting data from various sources, transforming it to fit business needs, and loading it into a target database.

  • Extract data from multiple sources such as databases, files, APIs, etc.

  • Transform the data by cleaning, filtering, aggregating, and structuring it.

  • Load the transformed data into a target database or data warehouse.

  • ETL tools like Informatica, Talend, and SSIS are commonly used for these processes.

BI Engineer Jobs

BI Engineer II, Amazon Search 2-6 years
Amazon India Software Dev Centre Pvt Ltd
4.1
Bangalore / Bengaluru
PowerBI Engineer 6-11 years
Siemens Limited
4.1
Bangalore / Bengaluru
BI Engineer 3-4 years
HTC Global Services (India) Pvt. Ltd.
3.6
Bangalore / Bengaluru
Are these interview questions helpful?
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Interview experiences of popular companies

4.1
 • 5k Interviews
3.1
 • 7 Interviews
4.6
 • 1 Interview
1.4
 • 1 Interview
View all

Calculate your in-hand salary

Confused about how your in-hand salary is calculated? Enter your annual salary (CTC) and get your in-hand salary

BI Engineer Interview Questions
Share an Interview
Stay ahead in your career. Get AmbitionBox app
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
65 L+

Reviews

4 L+

Interviews

4 Cr+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter