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Data Economy Trainee Interview Questions and Answers
Data Economy Trainee Interview Experiences
1 interview found
Anonymous
Selected
I applied via Campus Placement and was interviewed in Jan 2024. There were 2 interview rounds.
Basic logical and aptitude questions.
(4 Questions)
- Q1. Just simple python technical questions.
- Q2. Simple SQL questions
- Q3. What is 2NF, explain?
- Ans.
2NF stands for Second Normal Form. It is a database normalization technique that eliminates redundancy and ensures data integrity.
2NF is based on the concept of functional dependencies.
It requires that a table be in 1NF and each non-key attribute is functionally dependent on the entire primary key.
To achieve 2NF, we identify partial dependencies and remove them by creating separate tables.
Example: If we have a table wi...
- Q4. Dense rank, row number and rank?
Interview Preparation Tips
- Normalisation
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Interview questions from similar companies
I applied via Campus Placement and was interviewed before Jul 2021. There were 2 interview rounds.
(1 Question)
- Q1. 1 . Oops concept in detail 2 DBMS 3. Data base query
(1 Question)
- Q1. Document verification
Interview Preparation Tips
For experienced should be detailed knowledge on their domain.
I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.
(1 Question)
- Q1. Basic java concepts like collection frame work, exception handling
Interview Preparation Tips
Sakthivel B
I was interviewed in Jun 2017.
Interview Preparation Tips
Experience: They asked java basics,
what we wrote in resume will ask
about project
Tips: please prepare basics things
I applied via Campus Placement and was interviewed before Oct 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. What is encapsulation ?
- Ans.
Encapsulation is the process of hiding implementation details and providing access to only necessary information.
Encapsulation helps in achieving data abstraction and information hiding.
It allows for better control over data and prevents unauthorized access.
In Java, encapsulation is achieved through the use of access modifiers such as private, public, and protected.
For example, a class may have private variables that c...
- Q2. What is the meaning of string.
- Ans.
A string is a sequence of characters used to represent text in programming.
Strings are often used for storing and manipulating text data.
In Java, strings are represented by the String class.
Strings can be concatenated using the + operator.
Strings are immutable, meaning they cannot be changed once created.
Examples of string literals include "hello world" and "42".
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2018. There were 5 interview rounds.
Interview Questionnaire
4 Questions
- Q1. 1.Core java 2.Spring 3. Hibernate 4. Spring Boot 5. SQL 6. AngularJS
- Ans.
The question is asking about the candidate's knowledge in Core Java, Spring, Hibernate, Spring Boot, SQL, and AngularJS.
Core Java is the foundation of Java programming language.
Spring is a popular framework for building Java applications.
Hibernate is an ORM tool used for mapping Java objects to database tables.
Spring Boot is a framework for building microservices.
SQL is a language used for managing relational databases...
- Q2. 1. How to connect 2 DBs from spring boot application
- Ans.
To connect 2 DBs from a Spring Boot application, configure multiple data sources and use JdbcTemplate or EntityManager for each DB.
Configure multiple data sources in the application.properties file
Create separate configuration classes for each data source
Use JdbcTemplate or EntityManager to interact with each DB
Specify the appropriate data source in the repository or service classes
- Q3. 2. Difference between abstract method implementation and default method
- Ans.
Abstract method implementation is mandatory while default method is optional.
Abstract method has no implementation in the abstract class and must be implemented by the subclass.
Default method has a default implementation in the interface and can be overridden by the implementing class.
Abstract method is used to enforce a contract while default method is used to provide a default behavior.
Example: abstract method - publ...
- Q4. 1. About salary and expectation
Interview Preparation Tips
Experience: Technical written test
General Tips: Terrible interview. HR told to give 11% hike with 6% variable and 5% fixed. I kicked off the company.
Skills: Web Technologies, Java Application Development
Duration: 1-4 weeks
Skills evaluated in this interview
Interview Questionnaire
1 Question
- Q1. Abstraction
I applied via Company Website
Interview Questionnaire
1 Question
- Q1. Java
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Jun 2020. There were 7 interview rounds.
Interview Questionnaire
2 Questions
- Q1. What java
- Ans.
Java is a high-level, object-oriented programming language used to develop applications for various platforms.
Java is platform-independent and can run on any platform with a JVM.
It is used for developing web, mobile, desktop, and enterprise applications.
Java has a vast library of pre-built classes and APIs.
It supports multithreading, exception handling, and garbage collection.
Java is widely used in the industry for its...
- Q2. Why java
- Ans.
Java is a popular, versatile, and reliable programming language used for developing a wide range of applications.
Java is platform-independent, making it easy to write code once and run it on multiple platforms.
It has a vast library of pre-built classes and APIs, making development faster and easier.
Java is highly secure and provides built-in features for encryption and authentication.
It is widely used in enterprise app...
Interview Preparation Tips
Skills evaluated in this interview
I was interviewed in Feb 2017.
Interview Questionnaire
3 Questions
- Q1. Basic Java questions, OOPs questions, Questions on abstract, Inteface classes, Spring questions, Hibernate questions, Tomcat server questions.
- Q2. Related to Project in you worked, work experience, how many technology you know about
- Q3. Hobbies, aspirations, your family background, what you like dislike, Salary negotiation.
Interview Preparation Tips
Experience: Interview was for 30 minutes duration. They have started with basic concepts like Abstract, Interface etc. Then they moved to core java. Some basic question on core java related to Exceptions, try-catch-finally blocks. Spring MVC basic questions, bean mapping questions. use of tomcat server in eclipse.
Tips: I was lucky at that day.
Interview was more likely of fresher level. I was first in the interview process, interviewer were not ready, so they directly asked few questions to me.
Level of interview was not up to the mark, I prepared for tougher interview, gone thru 500+ questions on core java, spring, hibernate, exceptions and try catch.
0-3 years in java is equivalent to fresher. But you have to be prepared for worst if you really wanted the job.
Before going to the interview, Do hands-on.
Round: Technical + HR Interview
Experience: They call it MR interview.
This interview was on call, after TR, same day. One HR dialed a no. for me.
The person asked about my previous experience in projects, How many technologies I have worked on. Why i am leaving my current employers as I have only 2 years of experience.
How much I am open up to new technologies.
Where i see myself after 5 years.
What are my career aspirations.
How much flexible I am with shifts and work loads.
Tips: Its simple round, You have to be sure why you want this job. give them a very valid reason of your own. Don't copy anybody else's answer. Be confident. If it is on call, speak clearly, maintain pace and voice. They may throw situations and puzzles. be calm, use your mind. Its fine if you don't know about anything. But don't tell directly that you don't know. Try to use all the positive words and phrases.
Round: HR Interview
Experience: They asked some question about myself. about family background. about hobbies and from your resume also, like how many projects you have done.How you are feeling in IT industry. Why this company.
At last salary negotiations. They have started with lowest, 10% hike. and i was expecting 40-50% hike.
I am getting 4 LPA right now, the offered me 5.2LPA at last. I had no options, so i agreed.
But i was very disappointed and tried my best to get more, but they convinced me that it is the best for my role.
Tips: Be confident and look happy, show the joy when you tell about your hobbies. It will lighten up the environment.
Don't insult your previous employer. Defend your current employer if the say something wrong, It a tricky ques
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