Hitachi Payment Services Senior MIS Analyst Interview Questions and Answers

General SQL Question

Q1. General puzzle questions from GFG
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Q2. Normal interview level SQL Question
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Q1. There were lot of behavioral questions
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Q2. Then there were few questions related to how to navigate through the data
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Q1. Depends on the role
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Q2. Second round will be written test
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Q3. Discussion with senior director
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Question depends on the Job description

Q1. Like and dislikes
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Q2. Normal conversation
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Q1. SQL Joins and remove duplicates
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Q2. Function to create a transaction bin column
Ans. 
Create a function to generate a transaction bin column based on transaction amounts.
• Create bins based on transaction amounts (e.g. $0-$100, $101-$200, etc.)

• Use pandas cut() function in Python to create bins

• Assign bin labels to the transactions based on the bin ranges
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I had a very bad interview experience. The interviewer didn't start with any introduction and immediately jumped into asking case study. After giving a case, he would leave for a few minutes, which made it seem like he was not interested in the process.

Questions asked:
Q1: You are an Analyst at UBER. The gross cab cancellation rate daily is 5% whereas on a particular day, it goes up to 10%. What could be the factors affecting the same?
To analyze the same list down the tables required in the database along with all the columns and write the query using the same table name & columns to find the required metrics.

Q2: Assume you work for YouTube Music and the CEO wants you to create a Business Health Dashboard. List down all the metrics the CEO will be interested in looking at.

Q1. A tough sql question
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Q1. Joins outputs for various types of joins
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table

• FU...read more
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Q2. Query using window functions
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Window functions are used to perform calculations across a set of table rows related to the current row.
• Window functions are used in SQL to perform calculations on a set of rows related to the current row.

• They allow you to perform calculations like ranking, moving averages, and cumulative sums.

• Examples of window functions include ROW_NUMBER(), RANK(), and SUM() OVER().
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Q1. Common question like about yourself
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Q2. Questions like stlc and roles responsibilities
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Q3. How to do uat testing
Ans. 
UAT testing involves testing the system in a real-world scenario by end users to ensure it meets their requirements.
• Understand the requirements and scope of the system

• Create test cases based on user scenarios

• Execute test cases with real users

• Document and report any issues found

• Obtain user feedback for improvements
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Q4. What is agile process
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Agile process is a project management approach that emphasizes flexibility, collaboration, and incremental development.
• Agile process involves breaking down projects into small, manageable tasks called user stories.

• It focuses on frequent communication and collaboration between team members.

• Iterations, or sprints, are used to deliver working software in short timeframes.

• Adaptability and responding to change are key princ...read more
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Q5. What kind of testing is done in past
Ans. 
Various types of testing were conducted in the past including functional testing, regression testing, performance testing, and user acceptance testing.
• Functional testing to ensure the software functions as expected

• Regression testing to check for any new bugs introduced after changes

• Performance testing to assess the speed and stability of the software

• User acceptance testing to validate if the software meets user require
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Q1. Group discussion
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Q2. Team management, understanding individual in a team , motivation related and many more
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Q3. How will you work under pressure
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Q4. How will you manage a team
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Q5. Language based questions
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