ABB Intern Interview Questions and Answers

Coding Round is conducted in HackerRank Test

Q1. What is the difference between MySQL and Postgresql.
Ans. 
MySQL is known for its speed and ease of use, while PostgreSQL is known for its advanced features and extensibility.
• MySQL is more commonly used in web applications due to its speed and simplicity.

• PostgreSQL is preferred for complex applications that require advanced features like JSON support, full-text search, and custom data types.

• MySQL has a larger market share and is owned by Oracle, while PostgreSQL is open-source...read more
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Q2. What is the principle of OOPS
Ans. 
OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPS focuses on the use of classes and objects to organize code

• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: the ability for objects of differ...read more
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Q1. What is the OOPS
Ans. 
OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPS focuses on creating objects that interact with each other to solve problems

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation

• Example: In a banking system, you can have classes like Account, Customer, and Transaction, each with their own pro
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Q2. How Will You Include CSS in HTML

Ans. 

CSS can be included in HTML using inline, internal, or external methods.

• Use inline CSS by adding the style attribute to HTML elements

• Use internal CSS by placing CSS code within