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Country Holidays Travel India Interview Questions and Answers

Updated 24 Oct 2024

Q1. Angle between hour hand and minute hand at 3:15

Ans.

The angle between the hour hand and minute hand at 3:15 is 7.5 degrees.

  • At 3:00, the hour hand is at the 3 o'clock position, which is 90 degrees.

  • In 15 minutes, the minute hand moves 90 degrees (360 degrees divided by 4).

  • The hour hand also moves slightly in 15 minutes, covering 7.5 degrees (30 degrees divided by 4).

  • Therefore, the angle between the hour hand and minute hand at 3:15 is 7.5 degrees.

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Q2. Factorial code using recursion

Ans.

Factorial code using recursion

  • Recursion is a technique where a function calls itself

  • Factorial of a number is the product of all positive integers less than or equal to that number

  • To calculate factorial using recursion, the base case is when the number is 0 or 1

  • The recursive step is to call the factorial function with the number decremented by 1 and multiply it with the number itself

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Q3. What is Supply Chain from your point of view?

Ans.

Supply Chain is the process of managing the flow of goods and services from the point of origin to the point of consumption.

  • Involves planning, sourcing, producing, delivering, and returning goods and services

  • Focuses on efficiency, cost-effectiveness, and customer satisfaction

  • Examples include inventory management, transportation logistics, and supplier relationships

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Q4. For what purpose trim used in sql?

Ans.

Trim is used in SQL to remove leading and trailing spaces from a string.

  • Trim function is used to remove leading and trailing spaces from a string

  • It is commonly used to clean up data before performing comparisons or concatenations

  • Syntax: TRIM([LEADING | TRAILING | BOTH] [characters] FROM [string])

  • Example: SELECT TRIM(' hello ') as trimmed_string

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Q5. What is normalisation

Ans.

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

  • Normalization involves breaking down data into smaller, more manageable tables.

  • It helps in reducing data redundancy by storing data in a structured manner.

  • Normalization ensures data integrity by avoiding update anomalies.

  • There are different normal forms such as 1NF, 2NF, 3NF, and BCNF.

  • Example: In a database, instead of storing customer details in multiple tables, norm...read more

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Q6. Write down SQL commands

Ans.

SQL commands are used to interact with databases and perform various operations.

  • SELECT: retrieves data from a database

  • INSERT: inserts new data into a database

  • UPDATE: modifies existing data in a database

  • DELETE: deletes data from a database

  • CREATE: creates a new database, table, or view

  • ALTER: modifies the structure of a database object

  • DROP: deletes a database object

  • JOIN: combines rows from two or more tables based on a related column

  • GROUP BY: groups rows based on a specified col...read more

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Q7. OOPS concepts and applications

Ans.

OOPS concepts and applications

  • OOPS stands for Object-Oriented Programming System

  • It is a programming paradigm that uses objects to represent and manipulate data

  • Key concepts include encapsulation, inheritance, and polymorphism

  • OOPS allows for modular and reusable code

  • Examples of OOPS languages include Java, C++, and Python

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Technical Round
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