Caterpillar Inc Intern Interview Questions and Answers for Freshers

Q1. Normalization in SQL, What is Cursor in SQL
Ans. 
Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity. A cursor in SQL is a database object used to retrieve and manipulate data row by row.
• Normalization in SQL involves breaking down a large table into smaller tables and defining relationships between them to reduce redundancy.

• Cursors in SQL are used to fetch and process individual rows returned by a query...read more
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Q2. .Net Core and API based questions
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Q3. Abstract and interface difference
Ans. 
Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
• Abstract classes can have constructors, fields, and non-abstract methods along with abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class
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Q4. Const and read only difference in C#
Ans. 
Const keyword is used to declare constants at compile time, while read-only keyword is used to create immutable fields that can only be assigned a value at runtime.
• Const values are determined at compile time and cannot be changed, while read-only values can only be assigned a value once at runtime.

• Const fields are implicitly static, while read-only fields are not.

• Example: const int x = 5; read-only int y = 10;
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Q5. Azure basic fundamental questions
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Q6. Sample query to join tables using SQL
Ans. 
Sample query to join tables using SQL
• Use the JOIN keyword to combine rows from two or more tables based on a related column between them

• Specify the columns to be selected from each table

• Use the ON keyword to specify the join condition
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Q1. Why are you leaving previous company.
Ans. 
Seeking new challenges and growth opportunities.
• Looking for a company that aligns better with my career goals.

• Seeking a more collaborative and innovative work environment.

• Desire to work on cutting-edge technologies and projects.

• Exploring new industries or domains to broaden my skillset.

• Relocation or commute reasons.

• Company downsizing or restructuring.

• Personal reasons or career change.
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Q2. What is your strength
Ans. 
My strength is problem-solving and analytical thinking.
• I have a strong ability to analyze complex problems and break them down into manageable tasks.

• I am skilled at identifying patterns and finding efficient solutions.

• I have experience in using various programming languages and tools to solve problems.

• I am a quick learner and adapt well to new technologies and frameworks.

• I have a track record of successfully delivering
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Aptitute with cs fundamental questions (MCQ)

Q1. Explanation of project
Ans. 
Developed a web application for tracking inventory in a warehouse
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js for back-end

• Utilized PostgreSQL database for storing inventory data
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Q2. Sql query to fetch specific column
Ans. 
Use SELECT statement in SQL to fetch specific column from a table.
• Use SELECT column_name FROM table_name;

• Replace column_name with the name of the column you want to fetch.

• Replace table_name with the name of the table where the column is located.
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Q1. What is data structures in python
Ans. 
Data structures in Python are ways of organizing and storing data to make it easier to access and manipulate.
• Data structures in Python include lists, tuples, dictionaries, sets, and arrays.

• Lists are ordered collections of items, tuples are immutable sequences, dictionaries are key-value pairs, sets are unordered collections, and arrays are used for numerical data.

• Data structures help optimize operations like searching,...read more
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Fibonacci, Series of numbers

Q1. Spring, AWS, projects
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Q1. Salary discussion
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MCQ of programming languages - c/c++/Python , basic DS and OS questions

Q1. DS and programming language questions
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Q1. Project level discussion and questions
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