Filter interviews by
DDL and DML are SQL commands for defining and manipulating database structures and data.
DDL (Data Definition Language) commands define database structures. Examples: CREATE, ALTER, DROP.
DML (Data Manipulation Language) commands manage data within those structures. Examples: SELECT, INSERT, UPDATE, DELETE.
DDL commands affect the schema, while DML commands affect the data stored in the schema.
Example of DDL: CREATE ...
Program to print odd and even numbers using multithreading
Create two separate threads for printing odd and even numbers
Use synchronization mechanisms like mutex or semaphore to ensure proper ordering of output
Example: Thread 1 prints odd numbers (1, 3, 5, ...) and Thread 2 prints even numbers (2, 4, 6, ...)
Rate limit design involves setting limits on the number of requests a user can make within a certain time frame to prevent abuse or overload.
Consider the type of requests being made and the impact of rate limiting on user experience.
Implement rate limiting at different levels such as API endpoints, user accounts, or IP addresses.
Use tokens or tokens buckets to track and enforce rate limits.
Provide clear error mess...
SQL queries of Strings
Use the LIKE operator to search for a specified pattern in a column
Use the CONCAT function to concatenate strings
Use the SUBSTRING function to extract a substring from a string
My interest areas include data analysis, market research, and digital marketing.
Data analysis
Market research
Digital marketing
Use a subquery to find the 2nd largest number in a database table.
Use a subquery to select all distinct numbers from the table
Order the numbers in descending order
Use LIMIT 1,1 to select the second row which will be the 2nd largest number
Program to check if a string can be rearranged to form a palindrome
Create a frequency map of characters in the string
Count the number of characters with odd frequencies
If there is at most one character with odd frequency, the string can be rearranged to form a palindrome
Diamond problem in Java occurs when a class inherits from two classes that have a common ancestor, resulting in ambiguity.
Occurs in multiple inheritance when a class inherits from two classes that have a common ancestor
Results in ambiguity as the compiler cannot determine which method to call
Can be resolved using interfaces or by explicitly overriding methods
Python supports various data types including integers, floats, strings, lists, tuples, dictionaries, and more.
Integers: whole numbers without decimal points (e.g. 5, -3)
Floats: numbers with decimal points (e.g. 3.14, -0.5)
Strings: sequences of characters enclosed in quotes (e.g. 'hello', '123')
Lists: ordered collections of items (e.g. [1, 'apple', True])
Tuples: ordered, immutable collections of items (e.g. (1, 'ba...
Java is statically typed, object-oriented language with a focus on performance and scalability. Python is dynamically typed, high-level language known for its simplicity and readability.
Java is statically typed, meaning variable types are explicitly declared at compile time. Python is dynamically typed, allowing for more flexibility but potentially leading to runtime errors.
Java is more verbose and requires more b...
I applied via Referral and was interviewed in Jun 2024. There were 2 interview rounds.
Tree traversals are methods to visit all nodes in a binary tree in different orders: inorder, preorder, and postorder.
Inorder Traversal: Visit left subtree, root, then right subtree. Example: For tree 1,2,3, result is 2,1,3.
Preorder Traversal: Visit root, left subtree, then right subtree. Example: For tree 1,2,3, result is 1,2,3.
Postorder Traversal: Visit left subtree, right subtree, then root. Example: For tree 1,2,3,...
Rate limit design involves setting limits on the number of requests a user can make within a certain time frame to prevent abuse or overload.
Consider the type of requests being made and the impact of rate limiting on user experience.
Implement rate limiting at different levels such as API endpoints, user accounts, or IP addresses.
Use tokens or tokens buckets to track and enforce rate limits.
Provide clear error messages ...
I applied via Campus Placement and was interviewed in Aug 2024. There were 2 interview rounds.
On mettle platform was easy
I am a passionate Senior SDET Engineer with a strong interest in automation, quality assurance, and continuous improvement.
Experienced in designing and implementing automated testing frameworks
Skilled in identifying and resolving software defects
Passionate about staying up-to-date with the latest technologies and tools in the QA field
I have worked on various projects including test automation, performance testing, and CI/CD implementation.
Test automation project using Selenium and Java to automate regression tests for web applications
Performance testing project using JMeter to simulate load on a web application and identify bottlenecks
CI/CD implementation project using Jenkins to automate build, test, and deployment processes
In 5 years, I see myself as a senior business analyst leading a team and contributing to strategic decision-making.
Leading a team of analysts
Contributing to strategic decision-making
Continuing professional development and certifications
Possibly pursuing a management role
Enhancing industry knowledge and expertise
I am interested in Epsilon's innovative approach to data analytics and leaving my current organization for career growth opportunities.
Epsilon's reputation for cutting-edge data analytics solutions
Opportunity for career growth and development at Epsilon
Excited about working with a new team and learning new skills
posted on 23 Aug 2024
SQL is a programming language used for managing and querying relational databases.
SQL stands for Structured Query Language
It is used to retrieve, insert, update, and delete data in databases
Common SQL commands include SELECT, INSERT, UPDATE, DELETE
SQL is used in various database management systems like MySQL, Oracle, SQL Server
Example: SELECT * FROM customers WHERE city = 'New York';
I appeared for an interview in Mar 2025, where I was asked the following questions.
DDL and DML are SQL commands for defining and manipulating database structures and data.
DDL (Data Definition Language) commands define database structures. Examples: CREATE, ALTER, DROP.
DML (Data Manipulation Language) commands manage data within those structures. Examples: SELECT, INSERT, UPDATE, DELETE.
DDL commands affect the schema, while DML commands affect the data stored in the schema.
Example of DDL: CREATE TABLE...
I have extensive experience in technical support, troubleshooting, and customer service across various industries.
Provided technical support for software applications, resolving issues for over 100 users daily.
Implemented a ticketing system that improved response time by 30%.
Conducted training sessions for new employees on troubleshooting techniques.
Collaborated with development teams to identify and resolve recurring ...
I appeared for an interview in Mar 2025, where I was asked the following questions.
Top trending discussions
Some of the top questions asked at the Epsilon interview -
The duration of Epsilon interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 71 interview experiences
Difficulty level
Duration
based on 759 reviews
Rating in categories
Senior Software Engineer
405
salaries
| ₹16.9 L/yr - ₹29.8 L/yr |
Software Engineer2
193
salaries
| ₹5.2 L/yr - ₹18 L/yr |
Software Engineer
172
salaries
| ₹5.9 L/yr - ₹14 L/yr |
Senior Developer
160
salaries
| ₹9.9 L/yr - ₹29.4 L/yr |
Campaign Analyst
145
salaries
| ₹4.9 L/yr - ₹10 L/yr |
R.R. Donnelley
Smollan Group
ChannelPlay
Affinity Express