Rockwell Automation Data Engineer Interview Questions and Answers

2 DSA questions. one of DP and other on LinkedLists medium level questions.

Q1. Questions about Spark fundamentals
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Q2. Hard SQL questions
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Q1. How did manage risks during migration of DB
Ans. 
I managed risks during migration of DB by conducting thorough risk assessments, creating backup plans, and involving key stakeholders.
• Conducted thorough risk assessments to identify potential issues

• Created backup plans to mitigate risks and minimize downtime

• Involved key stakeholders in the migration process to ensure alignment and support
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Q1. Explain oop concets
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OOP concepts are fundamental principles in object-oriented programming that help in organizing and designing code.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability of a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation detai...read more
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Q2. Virtual functions
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Q1. Explain vectors and array difference

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Vectors are dynamic arrays that can change in size, while arrays have a fixed size.

• Vectors can grow or shrink in size dynamically, while arrays have a fixed size.

• Vectors can be resized using functions like push_back() and pop_back(), while arrays cannot.

• Vectors are part of the C++ Standard Template Library (STL), while arrays are a fundamental data structure.

• Example: vector vec; int arr[5];

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