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TransUnion Associate Data Engineer Interview Questions and Answers
TransUnion Associate Data Engineer Interview Experiences
1 interview found
Abushama Siddiqui
(2 Questions)
- Q1. How do you remove duplicates in sql
- Ans.
Use the DISTINCT keyword in a SELECT statement to remove duplicates in SQL.
Use the DISTINCT keyword in a SELECT statement to retrieve unique rows
Use GROUP BY clause with aggregate functions like COUNT() to remove duplicates based on specific columns
Use ROW_NUMBER() function with PARTITION BY clause to remove duplicates and keep only one row
- Q2. Explain the different joins in SQL
- Ans.
Different types of joins in SQL include inner join, outer join, left join, and right join.
Inner join: Returns rows when there is a match in both tables
Outer join: Returns all rows when there is a match in one of the 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
Skills evaluated in this interview
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Interview questions from similar companies
I applied via Recruitment Consultant and was interviewed in May 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Very basic qutions
Anonymous
Interview Questionnaire
5 Questions
- Q1. Cte vs temp table
- Ans.
CTE and temp tables are used to store intermediate results in SQL queries.
CTE stands for Common Table Expression and is defined within a query.
Temp tables are created in the tempdb database and can be accessed across sessions.
CTEs are generally faster and more readable than temp tables.
Temp tables are useful for complex queries with multiple steps or when data needs to be manipulated.
CTEs are useful for recursive queri
- Q2. Parameter sniffing
- Q3. Asynchronous programming in .net
- Ans.
Asynchronous programming in .NET allows for non-blocking execution of code, improving performance and responsiveness.
Async and Await keywords used to implement asynchronous programming
Allows for parallel execution of multiple tasks
Improves performance and responsiveness of applications
Examples include web applications, file I/O operations, and database queries
- Q4. Threading in .net
- Ans.
Threading in .NET allows for concurrent execution of code, improving performance and responsiveness.
Threading allows for multiple threads of execution to run concurrently
Thread class is used to create and manage threads
Thread synchronization is important to prevent race conditions and deadlocks
Async/await is a newer approach to concurrency in .NET
TPL (Task Parallel Library) provides higher-level abstractions for concur
- Q5. Performance tuning of SQL stored procedure
- Ans.
Performance tuning of SQL stored procedure involves optimizing query execution time and reducing resource usage.
Identify and optimize the most resource-intensive queries
Use appropriate indexing and partitioning techniques
Minimize network round trips and data transfers
Avoid using cursors and temporary tables
Use query hints and plan guides to influence query execution plan
Regularly monitor and analyze query performance u...
Skills evaluated in this interview
I applied via Campus Placement and was interviewed before Sep 2021. There were 5 interview rounds.
(1 Question)
- Q1. The round comprised of basic multiple choice questions from DBMS, networking, data structure, algorithms and Java/C++ coding.
This round consisted of flow diagram based aptitude questions. No multiple choices were present.
A simple group discussion on topics related to current affairs.
(1 Question)
- Q1. An interesting interaction with HR about the company's expectations on hiring you.
(1 Question)
- Q1. This was the final round where simple technical questions were asked from topics specified in applicant's resume. Also some basic questions from Networking and data structures.
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed before Jan 2022. There were 2 interview rounds.
(2 Questions)
- Q1. Self introduction and technical what is data factory and explain about the project
- Q2. What is your goals and family background
- Ans.
My goal is to become a highly skilled software engineer and contribute to innovative projects. My family background is supportive and has encouraged my pursuit of a career in technology.
Goal: Become a highly skilled software engineer
Contribute to innovative projects
Family background: Supportive and encouraging
Pursuit of a career in technology
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Feb 2021. There were 4 interview rounds.
Technical MCQ on concepts of Computer Science (Programming, Database, etc)
Flow Chart - Aptitude Round
(1 Question)
- Q1. Technical Interview. Technical questions based on resume. Some basic programming questions.
(2 Questions)
- Q1. What are your strengths and weaknesses?
- Q2. Tell me about yourself.
Interview Preparation Tips
Interview Questionnaire
1 Question
- Q1. What are your goals while looking to join our organization?
I applied via Naukri.com and was interviewed before Nov 2020. There were 3 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Basic questions on javascript, angular, html,css
- Q2. Questions on localstorage , tokens, security, interceptors
Interview Preparation Tips
I applied via LinkedIn and was interviewed before Jun 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Basics Of JS
I applied via Freshers world and was interviewed before Sep 2021. There were 2 interview rounds.
Reasoning, Quantitative aptitude,OOPS concepts, English
(2 Questions)
- Q1. OOPS concepts of Java
- Ans.
OOPS concepts of Java
Encapsulation - binding data and methods together
Inheritance - creating new classes from existing ones
Polymorphism - ability of objects to take many forms
Abstraction - hiding implementation details
Interfaces - defining a set of methods that a class must implement
Classes - blueprint for creating objects
- Q2. Some questions related to my projects
Interview Preparation Tips
Skills evaluated in this interview
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TransUnion Associate Data Engineer Interview Process
based on 1 interview
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TransUnion Associate Data Engineer Reviews and Ratings
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