Gramener Interview Questions and Answers

It was for 40 min. I gave my intro and my career history. Then I was asked a couple of python questions: what are Dunder functions. Then I was asked to do a python coding challenge, which I was not able to solve.

The interviewer did not introduce himself, nor did he mention his name in the zoom call attendee text. His camera was turned off and he disappeared after giving me the problem. I tried to get his attention and he kept saying that he'll be back in a minute.

Consist of aptitute +cs fundamental

Q1. Basic question about ur project
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Q1. Why you want to join us?
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I am passionate about data analysis and believe in the mission and values of your company.
• I have a strong background in statistics and data analysis, which aligns well with the requirements of the role.

• I am impressed by the innovative projects and technologies your company is working on, and I am excited to be a part of that.

• I value the collaborative and supportive work culture that your company promotes, and I believe
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Q1. Formula of viscosity
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Q1. SCD Types and how you implement it
Ans. 
SCD Types are Slowly Changing Dimensions used to track historical data changes in a data warehouse.
• SCD Type 1: Overwrite old data with new data, losing historical information.

• SCD Type 2: Create new records for each change, maintaining historical data.

• SCD Type 3: Add columns to track changes, keeping both old and new data in the same record.
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Q2. VACCUM, OPTIMIZE, LAZY EVALUATION, SPARK ARCHITECTURE
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Q3. SQL PROGRAMS ( Tough )
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Q1. Python, SQL, programming skills
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Q1. Data science and Machine Learning questions (basics)
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