Vyapar Data Engineer Interview Questions and Answers

They are asking about SQL queries and BI dashboard knowledge

Q1. 1. Tell about yourself? 2. What is your Project? 3. WHat challenges faced in Data Engineering role 4. BI dashboard development experience
Ans. 
I am a data engineer with experience in BI dashboard development and overcoming challenges in the field.
• I have worked on various data engineering projects, including building data pipelines and optimizing data storage.

• One of my notable projects involved developing a real-time data processing system for a retail company, which improved their inventory management and sales forecasting.

• In my previous role, I faced challen...read more
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Q2. 1. What is Data models 2. What are the activities used in ADF 3. What is IR?
Ans. 
Answers to questions related to Data Models, ADF activities, and IR.
• Data models are the representation of data structures and relationships between them.

• ADF activities include data movement, data transformation, and control activities.

• IR stands for Integration Runtime, which is a compute infrastructure used to provide data integration capabilities across different network environments.
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It was Python coding and Sql query assessment round.

Q1. Perform task on joins?
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• Use JOIN keyword to combine tables based on a common column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id
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Q2. Explain projects
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Projects are specific tasks or assignments that require a set of skills and resources to complete.
• Projects are temporary endeavors with a defined beginning and end.

• They are unique, with specific goals, deliverables, and constraints.

• Projects require a team of individuals with different roles and responsibilities.

• Examples: Developing a data pipeline for real-time analytics, building a recommendation system for an e-comme
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Q1. What are advance types of join ?
Ans. 
Advanced types of join include outer join, self join, and cross join.
• Outer join: includes unmatched rows from one or both tables

• Self join: joins a table with itself

• Cross join: combines each row from one table with each row from another table
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Q2. Difference between having clause and where clause?
Ans. 
The WHERE clause is used to filter rows before grouping, while the HAVING clause is used to filter groups after grouping.
• WHERE clause is used with SELECT, UPDATE, and DELETE statements.

• HAVING clause is used with SELECT statements that include GROUP BY clause.

• WHERE clause filters individual rows based on conditions.

• HAVING clause filters groups based on conditions.

• WHERE clause is applied before the GROUP BY clause.

• HAVING...read more
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Q3. Differnce between join and union?
Ans. 
Join combines rows from two or more tables based on a related column, while union combines rows from two or more tables into a single result set.
• Join is used to combine rows from different tables based on a related column.

• Union is used to combine rows from two or more tables into a single result set.

• Join can be used with different types like inner join, left join, right join, etc.

• Union only combines rows with the same ...read more
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Q4. Basic oops concept ?
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Q5. What are python data structure?
Ans. 
Python data structures are containers that hold and organize data in different ways.
• Some common Python data structures are lists, tuples, sets, and dictionaries.

• Lists are ordered and mutable, allowing duplicate elements.

• Tuples are ordered and immutable, useful for storing related data together.

• Sets are unordered and contain unique elements, useful for mathematical operations.

• Dictionaries are key-value pairs, providing
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They are asking about SQL queries and BI dashboard knowledge

Q1. 1. Tell about yourself? 2. What is your Project? 3. WHat challenges faced in Data Engineering role 4. BI dashboard development experience
Add your answer
Q2. 1. What is Data models 2. What are the activities used in ADF 3. What is IR?
Ans. 
Answers to questions related to Data Engineer role
• Data models are the logical representation of data objects and their relationships

• ADF activities include data movement, data transformation, and control activities

• IR stands for Integration Runtime, which is a compute infrastructure used to provide data integration capabilities
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Q1. Sql queries- nth highest salary python code- reverse string, word count program repartition vs coalesce reader and writer API External vs managed table Spark architecture broadcast join where clause vs hav...read more
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Python and SQL coding

Q1. Python basics like explaining some functions
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Q2. Given me a code to solve while presenting the screen using different different approaches
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Q1. What are your goals
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Q2. Are you familiar with Celebal Technologies
Ans. 
Celebal Technologies is a technology company specializing in data engineering and analytics solutions.
• Celebal Technologies is known for providing data engineering and analytics solutions.

• They offer services such as data integration, data warehousing, and data visualization.

• Celebal Technologies works with clients across various industries to help them optimize their data processes.

• They have expertise in technologies lik...read more
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Q3. What is the Goal of Celebal Technologies
Ans. 
Celebal Technologies aims to provide innovative solutions using cutting-edge technologies to help businesses thrive in the digital age.
• Developing advanced data analytics tools for businesses

• Creating AI-driven solutions for automation and optimization

• Offering consulting services for digital transformation

• Empowering organizations with cloud computing and IoT solutions
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