IQVIA Software Engineer Interview Questions, Process, and Tips

Q1. Explain Behaviour subject in Angular.
Ans. 
Behaviour subject in Angular is a special type of subject that allows both subscribing and emitting values.
• BehaviourSubject is a type of subject in RxJS library.

• It has an initial value that will be emitted to new subscribers.

• It stores the latest value and emits it immediately to new subscribers.

• Example: const subject = new BehaviorSubject('initial value');

• Example: subject.next('new value');
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Q2. Explain Design Principles
Ans. 
Design principles are guidelines for designing software solutions that are maintainable, scalable, and efficient.
• Design principles help in creating software that is easy to understand, modify, and maintain.

• They promote code reusability, modularity, and flexibility.

• Examples of design principles include SOLID principles, DRY (Don't Repeat Yourself), KISS (Keep It Simple, Stupid), and YAGNI (You Aren't Gonna Need It).
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It was good test with mathematical learning

Array, String are core point for interview, html css , sql will be plus point

Q1. What if you stuck in middle of assign task? how you gonna tackle it
Ans. 
If stuck in the middle of an assigned task, I would follow a systematic approach to tackle it.
• Analyze the problem and identify the specific issue causing the blockage

• Break down the task into smaller subtasks and prioritize them

• Seek help or guidance from colleagues or seniors if necessary

• Research and gather relevant information or resources to overcome the obstacle

• Experiment with different solutions and evaluate their e...read more
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Q1. Anagram of two strings in java
Ans. 
Java program to check if two strings are anagrams
• Create a function that takes two strings as input

• Convert both strings to character arrays and sort them

• Check if the sorted arrays are equal to determine if they are anagrams
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Q2. Insert and select query in MySQL
Ans. 
Insert and select data in MySQL using SQL queries
• Use INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...); to insert data

• Use SELECT * FROM table_name; to select all data from a table

• Use SELECT column1, column2 FROM table_name WHERE condition; to select specific data based on a condition
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Q3. Get and Post APIs in rest
Ans. 
GET and POST are HTTP methods used in REST APIs for retrieving and sending data.
• GET method is used to retrieve data from a server

• POST method is used to send data to a server

• GET requests are idempotent, while POST requests are not

• GET requests should only be used for retrieving data, not for modifying data

• Example: GET request to retrieve a list of users - GET /users

• Example: POST request to create a new user - POST /users
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