Vyapar Data Engineer Interview Questions and Answers

Q1. SQL basics questions like types of joins, indexes etc.
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Q1. About last company project experience
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Q1. Salary, reason to change discussion
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6 SQL questions to solve which would be easy to moderate.

Q1. Basic to moderate SQL questions
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Q1. Managerial round just asked about previous company and work profile.
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Q1. CTC discussion and brief explanation about the company.
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Q1. They asked Questions on join given two table A&B with one column each and u have to print out put for inner join, left join and correct join.
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Q2. Then they asked medium level questions given , write query to print 2nd highest marks for each class using concept of windows function in SQL.
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Q1. Managerial round
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Q2. They asked all my project in my CV and deep discussion on each one. What is SCD type, what are composite key .
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Q1. CTC negotiation
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Q2. What u know about company and why u want to join company.
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Guestimation question was asked.

Easy to medium leetcode question asked on array , 2 pointer , sliding window

Q1. How will you handle team conflicts
Ans. 
I will address team conflicts by promoting open communication, active listening, and facilitating constructive discussions.
• Encourage open communication among team members to address conflicts early on

• Practice active listening to understand all perspectives and concerns

• Facilitate constructive discussions to find mutually beneficial solutions

• Seek input from team members to involve them in the resolution process
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Q2. Are you able to relocate
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Yes, I am open to relocating for the right opportunity.
• I am willing to relocate for the right job opportunity

• I have experience moving for previous roles

• I am flexible and adaptable to new environments
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Q1. Dense rank, rank and row number
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Q2. Self join HR data sql query
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SQL+CODING QUESTIONS

Q1. CODING QUESTION YOU NEEDED TO TELL YOUR APPROACH AND CODE THEN
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Q2. SQL QUESTIONS - THEORY + PREDICTING OUTPUT
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Q1. DSA + MANAGERIAL ROUND
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Q2. HR QUESTIONS ABOUT YOUR FUTURE
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Q1. Rate yourself in SQL and PowerBi
Ans. 
I rate myself highly in SQL and PowerBi, with extensive experience in both tools.
• Proficient in writing complex SQL queries for data extraction, manipulation, and analysis

• Skilled in creating interactive and insightful visualizations in PowerBi

• Experience in combining data from multiple sources and transforming it into actionable insights

• Familiar with optimizing queries for performance and efficiency

• Have successfully used...read more
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Q2. Different Type of Joins
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Different types of joins in SQL are inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a 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 outer join: Returns rows when there is a match in either table.
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It was very easy and out of 1000 students 300 students got shortlisted.

Q1. It was also easy and out of 300 students 30 got shortlisted.
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Q2. What are oops? Explain 4 pillars
Ans. 
OOPs stands for Object-Oriented Programming. The 4 pillars are Inheritance, Encapsulation, Abstraction, and Polymorphism.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Parent class 'Animal' and child class 'Dog' inheriting from 'Animal'.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Using private variables and public methods in...read more
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Q3. What is DBMS and SQL?
Ans. 
DBMS stands for Database Management System, which is a software system that manages databases. SQL is a language used to interact with databases.
• DBMS is a software system that allows users to define, create, maintain, and control access to databases.

• SQL (Structured Query Language) is a language used to communicate with a database. It is used to retrieve, update, and manage data in a database.

• Examples of popular DBMS in...read more
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Q4. What is MongoDB? Explain it.
Ans. 
MongoDB is a NoSQL database program that uses a document-oriented data model.
• NoSQL database program

• Document-oriented data model

• Uses JSON-like documents for data storage

• Supports dynamic schemas for flexible data structures
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Q5. Explain all hooks of React.
Ans. 
React hooks are functions that let you use state and other React features without writing a class.
• Hooks are functions that let you use state and other React features in functional components

• useState() - allows functional components to have local state

• useEffect() - allows functional components to perform side effects

• useContext() - allows functional components to access context

• useReducer() - an alternative to useState() ...read more
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