Informatica Business Solutions Interview Questions and Answers

Q1. Java Programming related
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Q2. Sql, Linux, Maven related
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Q1. Java Programming related
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Q1. Java concepts related Questions
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Q1. Little technical and more Logical related
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Q1. Asusual HR round related questions
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Q1. What is multithreading ?
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Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for improved performance and responsiveness.
• Multithreading allows multiple threads to run concurrently within the same process.

• Each thread has its own stack and program counter, but shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of multithreading include web...read more
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Q2. What are the annotations you used in your current project
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I used annotations like @Autowired, @Component, @RestController in my current project
• @Autowired - used for automatic dependency injection

• @Component - used to indicate a class is a Spring component

• @RestController - used to create RESTful web services
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Q1. Design LRU cache
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Design a data structure for LRU cache with get and put operations, evicting least recently used item when capacity is reached.
• Implement a doubly linked list to keep track of the order of keys based on their usage

• Use a hashmap to store key-value pairs for quick access

• Update the order of keys in the linked list when get or put operations are performed

• Evict the least recently used item when the cache reaches its capacity
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Q2. Longest Palidrimic Substring
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The task is to find the longest palindromic substring in a given string.
• Use dynamic programming to solve the problem efficiently.

• Iterate through the string and expand around the center to check for palindromes.

• Keep track of the longest palindromic substring found so far.

• Handle both odd and even length palindromes separately.

• Return the longest palindromic substring found.
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Q1. Design Restaurant Management System
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Design a Restaurant Management System with features for reservations, orders, menu items, and billing.
• Implement a reservation system for customers to book tables in advance.

• Include a feature for placing and managing orders for both dine-in and takeout.

• Create a menu management system for adding, updating, and removing menu items.

• Incorporate a billing system that calculates total costs and generates receipts.

• Ensure scala...read more
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30 basic questions have to be completed in 30 minutes

Q1. Array question intermediate level
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Q2. Array questions intermediate level with more than 2 approaches
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Q3. Implementation and explanation of all oops concept
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Object-oriented programming concepts include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class). Example: class Car with properties like color and methods like start() and stop().

• Inheritance: allows a class to inherit properties and methods from another class. Example: class SUV inheriting from class Car.

• Polymorphism: ab...read more
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Q4. Some sql queries implementation
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SQL queries are essential for data manipulation and retrieval in databases, enabling efficient data management.
• SELECT statement: Used to retrieve data from a database. Example: SELECT * FROM employees;

• WHERE clause: Filters records based on specified conditions. Example: SELECT * FROM employees WHERE age > 30;

• JOIN operation: Combines rows from two or more tables based on a related column. Example: SELECT * FROM order...read more
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Q5. About mongo structure
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MongoDB is a NoSQL database that uses a flexible document structure for data storage, enabling scalability and ease of use.
• Documents are stored in BSON format, which is similar to JSON.

• Collections are groups of documents, analogous to tables in relational databases.

• MongoDB supports dynamic schemas, allowing for varied data structures within a collection.

• Example: A 'users' collection can have documents with different fi...read more
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Q6. About my more skills that I'm working on currently
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Q7. About my projects
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Q1. Introduce yourself in detail
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I am a recent graduate with a degree in Business Administration, passionate about marketing and eager to learn and grow in a professional setting.
• Recent graduate with a degree in Business Administration

• Passionate about marketing

• Eager to learn and grow in a professional setting
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Q2. Open any website and fetch the selected text and change the value in the console and append it
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Learn how to fetch and modify text from a website using the browser console.
• Open a website in your browser.

• Right-click on the text you want to select and choose 'Inspect' to open Developer Tools.

• In the console, use JavaScript to fetch the selected text, e.g., `let selectedText = window.getSelection().toString();`.

• Modify the text by appending new content, e.g., `console.log(selectedText + ' - New Content');`.

• You can als...read more
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Q3. Difference between querySelector and getElementWithClass
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querySelector selects elements using CSS selectors, while getElementWithClass selects elements by class name.
• querySelector uses CSS selectors to select elements, while getElementWithClass selects elements by class name

• querySelector can select elements based on any CSS selector, while getElementWithClass is limited to selecting elements by class name

• querySelector returns the first matching element, while getElementWithC...read more
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Q4. Javascript basic questions
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Q5. Diff between let and var
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let is block scoped while var is function scoped in JavaScript.
• let variables are limited to the block in which they are declared, while var variables are limited to the function in which they are declared.

• Using let can help prevent variable hoisting issues that may occur with var.

• let allows for better code readability and maintainability compared to var.
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Q6. Closures in Javascript
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Closures in JavaScript allow functions to access variables from their outer scope even after the outer function has finished executing.
• Closures are created whenever a function is defined within another function.

• Inner functions have access to the outer function's variables even after the outer function has returned.

• Closures can be used to create private variables and functions in JavaScript.
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Q7. Backend structure explanation in detail
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Backend structure refers to the organization of server-side components that handle data processing and storage.
• Backend structure typically includes databases, servers, APIs, and application logic.

• Databases store and manage data, servers handle requests and responses, APIs facilitate communication between different components, and application logic processes data and implements business rules.

• For example, a backend stru...read more
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Q8. React in detail
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React is a JavaScript library for building user interfaces.
• React is used for creating interactive UI components.

• It allows for efficient updating of the UI by only re-rendering the components that have changed.

• React uses a virtual DOM to improve performance.

• Components in React can be reusable and composed together.

• React can be used with other libraries like Redux for state management.
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Q9. Some css basic questions
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Q1. Introduce yourself
Ans. 
I am a recent graduate with a degree in Business Administration, passionate about marketing and eager to learn and grow in a professional setting.
• Recent graduate with a degree in Business Administration

• Passionate about marketing

• Eager to learn and grow in a professional setting
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Q2. Family background
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Q3. Why you are not selected for an internship till now
Ans. 
Lack of relevant experience and competition from more qualified candidates.
• Limited relevant experience in the field

• High competition from more qualified candidates

• Lack of networking or connections in the industry

• Not effectively showcasing skills and achievements in applications

• Limited availability of internship opportunities in desired field
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Q4. How many interviews you've given till now
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I have given a total of 10 interviews so far.
• I have given interviews for various positions in different industries.

• I have prepared for each interview by researching the company and practicing common interview questions.

• I have received offers from 3 out of the 10 interviews I have given.

• I have attended interviews both in person and virtually.
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Q1. Java , print characters innstring , problems on array
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Q2. Rest API Automation
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