NoBroker Backend Developer Interview Questions, Process, and Tips

OOPs stands for Object Oriented Programming. Java is called an OOP language because it follows the principles of OOP.

• OOPs is a programming paradigm that focuses on objects and their interactions.

• Java supports the four main principles of OOP: encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation allows bundling of data and methods into a single unit, providing data hiding and security.

• Inheritance enabl...read more

Indexing and partitioning are techniques used in DBMS to improve performance and manage large amounts of data.

• Indexing is the process of creating a data structure that allows for faster retrieval of data based on certain columns or fields.

• Partitioning involves dividing a large table into smaller, more manageable parts called partitions, which can be stored on different disks or servers.

• Both techniques can improve query...read more

Print the vertical level traversal of a binary tree.

• Traverse the tree and assign horizontal distance to each node.

• Store nodes in a map with their horizontal distance as key.

• Print nodes in each horizontal distance in vertical order.

Design table diagram and link tables for a movie booking website like bookmyshow.

• Create tables for movies, theaters, users, bookings, payments, and reviews

• Link movies and theaters through a many-to-many relationship

• Link users and bookings through a one-to-many relationship

• Link bookings and payments through a one-to-one relationship

• Link movies and reviews through a one-to-many relationship

Design a movie booking portal using objects and classes.

• Create a Movie class with attributes like title, genre, duration, etc.

• Create a Theater class with attributes like name, location, capacity, etc.

• Create a Show class with attributes like movie, theater, showtime, price, etc.

• Create a Booking class with attributes like show, seats, user, etc.

• Implement methods for booking tickets, canceling tickets, etc.

• Use database to...read more