ITC Infotech Software Developer Trainee Interview Questions and Answers

DBMS keys are used to uniquely identify a record in a table. Primary, foreign, candidate, and super keys are some of the types.

• Primary key: uniquely identifies a record in a table

• Foreign key: links two tables together

• Candidate key: can be used as a primary key

• Super key: a set of attributes that can uniquely identify a record

• Composite key: a combination of two or more attributes used as a primary key

Code for the pattern 1 12 123 1234 12345

• Use nested loops

• Print numbers in ascending order

• Add a line break after each row

Developed a web-based project management tool for a startup

• Used React and Node.js for front-end and back-end development

• Implemented real-time chat feature using Socket.io

• Integrated with Google Drive API for file sharing and storage

• Implemented user authentication and authorization using JWT

• Used Agile methodology for project management

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

• Start from the first element and compare it with the next element

• If the next element is smaller, swap them

• Repeat this process for all elements in the array

• Continue this process until no more swaps are needed

A program to print all prime numbers

• Take input from user for range of numbers

• Loop through the range and check if each number is prime

• Print the prime numbers

Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

• Hashmap uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Examples of hashmap implementations include Java's HashMap class and Python's dict type.

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows code reuse and promotes code organization.

• The existing class is called the parent or superclass, and the new class is called the child or subclass.

• The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

• For...read more