PwC Gcp Data Engineer Interview Questions, Process, and Tips

Q1. Project related discussions
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Q2. Meduim level SQl and DSA
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Q1. This was data modelling round
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Q2. Design a uber data model
Ans. 
Uber data model design for efficient storage and retrieval of ride-related information.
• Create tables for users, drivers, rides, payments, and ratings

• Include attributes like user_id, driver_id, ride_id, payment_id, rating_id, timestamp, location, fare, etc.

• Establish relationships between tables using foreign keys

• Implement indexing for faster query performance
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Three sections are there 1) Aptitude Test 2) SQL 3) DSA

Q1. What is DSA , sorting , difference between array and linked list
Ans. 
DSA stands for Data Structures and Algorithms. Sorting is the process of arranging data in a particular order. Array is a data structure that stores elements of the same data type in contiguous memory locations, while linked list is a data structure that stores elements in nodes with pointers to the next node.
• DSA stands for Data Structures and Algorithms

• Sorting is the process of arranging data in a particular order

• Arra...read more
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Q2. Written a SQL query
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Q1. Coding question like add numbers
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Q2. Experience on your project
Ans. 
I have experience working on various data analysis projects, including market research, customer segmentation, and predictive modeling.
• Developed predictive models to forecast customer behavior and optimize marketing strategies

• Conducted market research to identify trends and opportunities for growth

• Performed customer segmentation analysis to target specific demographics with personalized marketing campaigns
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Maxium sub string and reverse a string

Q1. Basics of power bi and sql
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Q2. What are joins and types of join
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table

• FULL JOIN...read more
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Q3. How to add date table in power bi
Ans. 
To add a date table in Power BI, you can create a new table with a list of dates and relationships with other tables.
• Create a new table in Power BI with a list of dates

• Add columns for day, month, year, etc. for additional analysis

• Establish relationships between the date table and other tables in the data model
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Q1. Sql scenario based question on joins
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Q2. Window function questions
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Q3. Performance tuning
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Q4. Power bi dax question
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Q1. How good are you with numbers
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Q1. Vlookup, pivot table, sumif, average, graphs
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Q1. Do you know the role and responsibility of this position
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Q1. Present yourself
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Q2. Asks about level of experience in each tachnology in the CV
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Q1. What is the number of tourist per day in jaipur
Ans. 
The number of tourists per day in Jaipur varies depending on the season and events happening in the city.
• Tourist numbers fluctuate based on time of year (peak season vs off-peak season)

• Events like festivals or cultural events can attract more tourists

• Historical sites like Amer Fort and Hawa Mahal are popular attractions

• Tourist numbers can be estimated based on hotel occupancy rates and ticket sales for attractions
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Basic Mathematics, Statistics questions

Share thoughts on one topic for in 1 minute

Q1. This is the technical round
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Q2. 1. Regression analysis 2. R2 , adj R2 3. Statistics 4. Machine Learning
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Q1. Basic Aptitude, quizzes, case study
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