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DaMENSCH Interview Questions and Answers
8 Interview questions
Normalisation is the process of organizing data in a database to reduce redundancy and dependency.
It involves breaking down a table into smaller tables and defining relationships between them.
The goal is to eliminate data redundancy and ensure data consistency.
Normalization is achieved through a series of normal forms, with each level building on the previous one.
For example, a customer's address should not be rep...
Aggregation functions are used to perform calculations on a set of values and return a single value as output.
Aggregation functions are commonly used in databases and data analysis to summarize and analyze large amounts of data.
Examples of aggregation functions include SUM, AVG, MAX, MIN, COUNT, and GROUP BY.
These functions can be used to calculate totals, averages, maximum and minimum values, and counts of specif...
Python has several major libraries including NumPy, Pandas, Matplotlib, and Scikit-learn.
NumPy is used for numerical computing and data analysis.
Pandas is used for data manipulation and analysis.
Matplotlib is used for data visualization.
Scikit-learn is used for machine learning and data mining.
To check which query is good, consider factors like execution time, resource usage, and accuracy of results.
Check the execution time of the query and compare it with other queries.
Analyze the resource usage of the query, such as CPU and memory usage.
Check the accuracy of the results and compare them with the expected output.
Consider the complexity of the query and its impact on the database.
Take into account the s...
SQL is a programming language used for managing relational databases. It uses dynamic memory management.
SQL stands for Structured Query Language
It is used for managing and manipulating data in relational databases
SQL uses dynamic memory management, which means that memory is allocated and deallocated as needed
Examples of SQL-based relational database management systems include MySQL, Oracle, and Microsoft SQL Serv...
Experienced customer support professional with a passion for helping others and a track record of resolving complex issues efficiently.
Over 5 years of experience in customer support roles, specializing in technical assistance.
Successfully managed a team of 10 support agents, improving response times by 30%.
Implemented a new ticketing system that reduced resolution time from 48 hours to 24 hours.
Received 'Employee ...
Group by is used to group data based on a common attribute. It can be used without a where clause.
Group by is used to group data based on a common attribute
It is used with aggregate functions like sum, count, avg, etc.
It can be used without a where clause to group all the data in the table
Group by is often used with having clause to filter the groups based on some condition
RDBMS is a relational database management system that organizes data into tables. SQL is used to query and manipulate data in RDBMS.
RDBMS stands for Relational Database Management System
It organizes data into tables with rows and columns
SQL (Structured Query Language) is used to interact with RDBMS
SQL allows querying, inserting, updating, and deleting data
RDBMS and SQL provide a structured and efficient way to sto...
DaMENSCH Interview Experiences
8 interviews found
Anonymous
I applied via Approached by Company and was interviewed in Jun 2024. There was 1 interview round.
(2 Questions)
- Q1. Tell me about your current role
- Q2. Tell me about to current company and what it does.
Interview Preparation Tips
Selected
I appeared for an interview before Mar 2024.
(1 Question)
- Q1. About Experience, knowledge, salary,
(1 Question)
- Q1. Distribution & Dealers planning and growth
All abouts skill, strength, experience, system knowledge, growth
Selected
I applied via Naukri.com and was interviewed in Jun 2023. There were 2 interview rounds.
(1 Question)
- Q1. Self introduction and about my previous job
Selected
I applied via Approached by Company and was interviewed in Aug 2022. There were 3 interview rounds.
(8 Questions)
- Q1. Basic Introduction and previous work experience
- Q2. What is SQL and which memory management it use?
- Ans.
SQL is a programming language used for managing relational databases. It uses dynamic memory management.
SQL stands for Structured Query Language
It is used for managing and manipulating data in relational databases
SQL uses dynamic memory management, which means that memory is allocated and deallocated as needed
Examples of SQL-based relational database management systems include MySQL, Oracle, and Microsoft SQL Server
- Q3. What is RDBMS and why we use SQL?
- Ans.
RDBMS is a relational database management system that organizes data into tables. SQL is used to query and manipulate data in RDBMS.
RDBMS stands for Relational Database Management System
It organizes data into tables with rows and columns
SQL (Structured Query Language) is used to interact with RDBMS
SQL allows querying, inserting, updating, and deleting data
RDBMS and SQL provide a structured and efficient way to store an...
- Q4. How to you check which query is good?
- Ans.
To check which query is good, consider factors like execution time, resource usage, and accuracy of results.
Check the execution time of the query and compare it with other queries.
Analyze the resource usage of the query, such as CPU and memory usage.
Check the accuracy of the results and compare them with the expected output.
Consider the complexity of the query and its impact on the database.
Take into account the scalab...
- Q5. What is the use of aggregation functions?
- Ans.
Aggregation functions are used to perform calculations on a set of values and return a single value as output.
Aggregation functions are commonly used in databases and data analysis to summarize and analyze large amounts of data.
Examples of aggregation functions include SUM, AVG, MAX, MIN, COUNT, and GROUP BY.
These functions can be used to calculate totals, averages, maximum and minimum values, and counts of specific da...
- Q6. When can we use group by? Can we use group by without where clause?
- Ans.
Group by is used to group data based on a common attribute. It can be used without a where clause.
Group by is used to group data based on a common attribute
It is used with aggregate functions like sum, count, avg, etc.
It can be used without a where clause to group all the data in the table
Group by is often used with having clause to filter the groups based on some condition
- Q7. What is normalisation?
- Ans.
Normalisation is the process of organizing data in a database to reduce redundancy and dependency.
It involves breaking down a table into smaller tables and defining relationships between them.
The goal is to eliminate data redundancy and ensure data consistency.
Normalization is achieved through a series of normal forms, with each level building on the previous one.
For example, a customer's address should not be repeated...
- Q8. What major libraries used in python?
- Ans.
Python has several major libraries including NumPy, Pandas, Matplotlib, and Scikit-learn.
NumPy is used for numerical computing and data analysis.
Pandas is used for data manipulation and analysis.
Matplotlib is used for data visualization.
Scikit-learn is used for machine learning and data mining.
(1 Question)
- Q1. Round 2 interview Interview duration was 1 hour. The interviewer asked me to write some ecommerce SQL queries given condition. (1 hour) 1) Find the pair of products that sells together in the cart. 2) To...
Interview Preparation Tips
2. For this role, you should be good enough in SQL, MongoDB basics, Google Analytics, Big query and python scripting.
Skills evaluated in this interview
Mohammed Sahil
I applied via Naukri.com and was interviewed in Jun 2022. There were 3 interview rounds.
(1 Question)
- Q1. Basic question tell me what your self and previous experience
(1 Question)
- Q1. Previous experience and the seniors which was handle in previous organization
- Ans.
I have previous experience in handling customer service for a senior team in my previous organization.
Managed a team of 5 customer service representatives
Provided training and guidance to new team members
Handled escalated customer complaints and resolved them effectively
Implemented new customer service strategies to improve customer satisfaction
Collaborated with senior management to develop and implement customer servi...
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Jul 2021. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. SQL questions on window functions and sub queries
- Q2. Questions on ecommerce price strategies and customer behaviour and competitiveness
- Q3. General guesstimate questions
Interview Preparation Tips
I appeared for an interview in Aug 2021.
(1 Question)
- Q1. Self introduction.......................... ............
- Ans.
Experienced customer support professional with a passion for helping others and a track record of resolving complex issues efficiently.
Over 5 years of experience in customer support roles, specializing in technical assistance.
Successfully managed a team of 10 support agents, improving response times by 30%.
Implemented a new ticketing system that reduced resolution time from 48 hours to 24 hours.
Received 'Employee of th...
Interview Preparation Tips
I applied via LinkedIn and was interviewed in Mar 2021. There were 4 interview rounds.
Interview Preparation Tips
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Interview questions from similar companies
I applied via Naukri.com and was interviewed in Sep 2019. There was 1 interview round.
Interview Questionnaire
5 Questions
- Q1. Question 1)Tell me about yourself and qualifications?
- Ans.
I am a recent graduate with a degree in Computer Science and experience in web development.
Recent graduate with a degree in Computer Science
Experience in web development
Strong problem-solving skills
Proficient in programming languages such as Java, JavaScript, and HTML/CSS
- Q2. Question 2)What are your hobbies?
- Ans.
My hobbies include reading, hiking, and playing the guitar.
Reading: I enjoy reading fiction and non-fiction books in my free time.
Hiking: I love exploring nature trails and challenging myself with new hikes.
Playing the guitar: I have been playing the guitar for several years and enjoy learning new songs.
- Q3. Question 3)What do you know about our company?
- Ans.
Our company is a leading tech startup specializing in AI-driven solutions for businesses.
Specializes in AI-driven solutions for businesses
Considered a leading tech startup in the industry
Known for innovative and cutting-edge technology
Has a strong focus on research and development
Provides services to a wide range of industries
- Q4. Question 4) Why do you want to join our company?
- Ans.
I want to join your company because of its innovative projects, strong company culture, and opportunities for growth.
Innovative projects that align with my interests and skills
Strong company culture that values collaboration and employee development
Opportunities for growth and advancement within the company
- Q5. Question 5) Tell me about your training and projects you have done in college?
- Ans.
I completed various training programs and projects during my college years, gaining hands-on experience in different areas.
Completed a training program in data analysis using Python and R
Developed a mobile application for a class project using Java and Android Studio
Participated in a research project on renewable energy sources
Completed an internship at a local software company, working on web development projects
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Straight forward questions regarding my job role and responsibilities.
Interview Preparation Tips
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