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phData Associate Data Engineer Interview Questions and Answers
phData Associate Data Engineer Interview Experiences
1 interview found
Selected
I applied via Campus Placement and was interviewed before Aug 2023. There were 3 interview rounds.
Pen and paper test that included writing SQL queries. And there was a basic programing question for which you could only use python or java.There was also a google form with MCQs of computer fundamentals.
(3 Questions)
- Q1. Resume based questions
- Q2. Pillars of Object oriented programing
- Ans.
Pillars of OOP are Inheritance, Encapsulation, Abstraction, and Polymorphism.
Inheritance allows a class to inherit properties and behaviors from another class.
Encapsulation restricts access to certain components of an object, protecting its integrity.
Abstraction hides complex implementation details and only shows necessary features.
Polymorphism allows objects to be treated as instances of their parent class.
- Q3. Given a node value in a linked list, delete the node.
- Ans.
To delete a node in a linked list, update the pointers of the previous node to skip the node to be deleted.
Traverse the linked list to find the node to be deleted.
Update the pointers of the previous node to skip the node to be deleted.
Free the memory allocated to the node to be deleted.
(2 Questions)
- Q1. Resume based round and questions on project
- Q2. A few mangerial questions.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
(2 Questions)
- Q1. What is the full form of ETL?
- Ans.
ETL stands for Extract, Transform, Load. It is a process used in data warehousing to extract data from various sources, transform it into a consistent format, and load it into a target database.
ETL stands for Extract, Transform, Load
Extract: Involves extracting data from various sources such as databases, applications, and files
Transform: Involves cleaning, filtering, and transforming the extracted data into a consiste...
- Q2. ETL Full form is Exact, Transform, Load.
Interview Preparation Tips
I appeared for an interview before Jun 2016.
Interview Questionnaire
1 Question
- Q1. Java related questions on Oops concept and Multithreading
Interview Preparation Tips
Experience: Simple aptitude and reasoning questions little java based programming
Tips: Basic programming knowledge and good aptitude
Duration: 1 hour
Total Questions: 60
Round: Technical Interview
Experience: Normal questions on Java, basic programming questions like reverse no. , String related and logical coding
Tips: What u mentioned on your resume go through that only, they will not ask apart from your resume
Skills: How Well You Are Able To Communicate What You Wanted To Tell, Programming
College Name: SRCEM
Randeep Singh
I applied via Company Website and was interviewed before Dec 2019. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Regarding OOPS, wordpress and laravel.
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Sep 2020. There were 3 interview rounds.
Interview Questionnaire
5 Questions
- Q1. Which collection class is used to represent key-value pairs?
- Ans.
The HashMap class is used to represent key-value pairs in Java.
HashMap is a part of the Java Collections Framework.
It allows null values and only one null key.
It provides constant-time performance for basic operations like get and put.
Example: HashMap<String, Integer> map = new HashMap<>();
- Q2. What is abstraction?
- Ans.
Abstraction is the process of simplifying complex systems by focusing on essential details and hiding unnecessary complexities.
Abstraction allows us to create models or representations of real-world objects or systems in software.
It helps in managing complexity by breaking down a system into smaller, more manageable parts.
Abstraction provides a level of indirection, allowing changes to be made in one part of the system...
- Q3. Why is try-catch used in JAVA?
- Ans.
try-catch is used in Java to handle exceptions and prevent program crashes.
try-catch blocks are used to catch and handle exceptions that may occur during program execution.
It allows the program to gracefully handle errors and prevent the program from crashing.
The try block contains the code that may throw an exception, and the catch block handles the exception.
Multiple catch blocks can be used to handle different types...
- Q4. Which statement will we use if we want to select a statement based on integer inputs?
- Ans.
The statement to use for selecting based on integer inputs is the 'switch' statement.
The 'switch' statement allows for multiple cases to be evaluated based on the value of an integer input.
Each case represents a possible value of the input, and the corresponding code block is executed if the value matches.
The 'switch' statement also provides a 'default' case which is executed if none of the cases match the input value.
...
- Q5. Explain your project.
Interview Preparation Tips
Prepare a good project
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Oct 2020. There was 1 interview round.
Interview Questionnaire
4 Questions
- Q1. Tell me about yourself
- Q2. Why IT
- Q3. About my project
- Q4. Few mechanical questions
Interview Preparation Tips
Software Engineer Interview Questions & Answers
BigStep Technologies
Mayank Gupta
posted on 14 Sep 2021
I applied via Campus Placement and was interviewed in Mar 2021. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. What are Joins in SQL? Briefly explain difference between all types of joins
- Ans.
Joins in SQL are used to combine data from two or more tables based on a related column.
Inner join returns only the matching rows from both tables
Left join returns all rows from the left table and matching rows from the right table
Right join returns all rows from the right table and matching rows from the left table
Full outer join returns all rows from both tables, with NULL values for non-matching rows
Cross join retur
- Q2. Find a sub array with a given sum
- Ans.
Given an array of integers, find a contiguous subarray with a given sum.
Use a sliding window approach to iterate through the array and keep track of the current sum.
If the current sum exceeds the given sum, move the window's left endpoint forward.
If the current sum is less than the given sum, move the window's right endpoint forward.
If the current sum equals the given sum, return the subarray.
Time complexity: O(n), Spa
- Q3. Questions related to Projects mentioned in CV
Interview Preparation Tips
Skills evaluated in this interview
I appeared for an interview before Apr 2021.
(3 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical interview round with questions on DSA and DBMS mainly.
- Q1.
Maximum Sum Subarray Problem Statement
Given an array
ARRconsisting ofNintegers, determine the sum of the subarray with the maximum sum, including the possibility of an empty subarray.A subarray is a...
- Ans.
Find the sum of the subarray with the maximum sum in a given array.
Iterate through the array and keep track of the current sum and maximum sum.
Update the maximum sum if the current sum becomes greater.
Handle cases where the array has all negative numbers or empty subarray.
Example: For input [-2, 1, -3, 4, -1], the maximum sum subarray is [4] with sum 4.
- Q2.
Prime Numbers Identification
Given a positive integer
N, your task is to identify all prime numbers less than or equal toN.Explanation:
A prime number is a natural number greater than 1 that has no po...
- Ans.
Identify all prime numbers less than or equal to a given positive integer N.
Iterate from 2 to N and check if each number is prime
Use the Sieve of Eratosthenes algorithm for efficient prime number identification
Optimize by only checking numbers up to square root of N for divisibility
- Q3. What are Joins in the context of databases?
- Ans.
Joins in databases are used to combine rows from two or more tables based on a related column between them.
Joins are used to retrieve data from multiple tables based on a related column.
Common 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 ta...
Round duration - 30 minutes
Round difficulty - Easy
Typical HR round with behavioral problems.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Software Engineer Interview Questions & Answers
BigStep Technologies
Anonymous
posted on 30 May 2022
I applied via Recruitment Consulltant and was interviewed before May 2021. There were 5 interview rounds.
Hackerrank Test
(1 Question)
- Q1. Questions related to NodeJS and Javascript Basics
(1 Question)
- Q1. Technical questions based on past experience
(1 Question)
- Q1. Company Culture related
(1 Question)
- Q1. Expectations and Processes
Interview Preparation Tips
The aptitude test was of moderate level.
It checked on the concepts of oops
(1 Question)
- Q1. How will you deal with tight delivery time.
- Ans.
I will prioritize tasks, communicate effectively with team members, and utilize time management techniques to meet deadlines.
Prioritize tasks based on importance and urgency
Break down tasks into smaller manageable chunks
Communicate effectively with team members to coordinate efforts
Utilize time management techniques such as Pomodoro technique or Agile methodologies
Identify and eliminate any potential roadblocks or bott...
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phData Associate Data Engineer Interview Process
based on 2 interviews
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