HARMAN Data Analyst Interview Questions and Answers

Q1. What is join in sql
Ans. 
Join in SQL is used to combine rows from two or more tables based on a related column between them.
• Join is used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q2. What is primary key
Ans. 
Primary key is a unique identifier for each record in a database table.
• Primary key ensures each record in a table is uniquely identified

• It must contain unique values and cannot have NULL values

• Primary key can be a single column or a combination of columns

• Example: 'ID' column in a 'Users' table can be a primary key
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Q1. If your seniors are on leave and you dont know how to deal situation what will you do
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Q2. How you will deal with your juniours when they dont have conceptual knowledge
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These are the general questions which we had studied upto 10th and likely to be coding ....i had never attempted to this aptitude test...just read by my seniors of btech

Coding is the favorite part of my life.....i started...no ..no..my coach started to taught me from C...then to C++, in the final year I'm impressed on Java and python for data science and machine learning......and much more interesting was IOT ....the world much better and with IOT without effecting the species by 5G and 4G networks

Good but very tough and difficult not easy to crack

Q1. About dsa and basic
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Skil set for My relevant job update

Communication discussion

Q1. About My profile and knowledge
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Q2. About My attitude and experience
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Q1. Excel formula and macro MS word and PowerPoint dashboard advanced Excel and power bi
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Q1. Introduction about our self
Ans. 
I am a data analyst with 5 years of experience in analyzing and interpreting complex data sets to drive business decisions.
• I have a strong background in statistical analysis and data visualization techniques.

• Proficient in SQL, Python, and Tableau for data manipulation and reporting.

• Experience in developing predictive models and conducting A/B testing to optimize marketing strategies.
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Q2. Complete discussion about projects
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