Bajaj Allianz Life Insurance Senior Manager Interview Questions and Answers

Q1. The output of 4 joins and how the processing happens?
Ans. 
The output of 4 joins is a result set that combines data from multiple tables based on specified conditions.
• Joins 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.

• Processing of joins involves matching rows from the tables based on the specified join condition.

• The output of 4 joins would involve combining data ...read more
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Q2. Spark Parameters calculation
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Q3. Self Joins between the table with CTE
Ans. 
Self joins between tables with CTE are used to join a table to itself using Common Table Expressions.
• Self joins are used when you need to compare rows within the same table.

• CTE is used to create a temporary result set that can be referenced multiple times in a query.

• Example: SELECT e1.employee_id, e2.manager_id FROM employees e1 JOIN employees e2 ON e1.manager_id = e2.employee_id
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Q4. Optimizations in Spark
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Optimizations in Spark involve tuning configurations, partitioning data, using efficient transformations, and caching intermediate results.
• Tune configurations for memory and parallelism

• Partition data to distribute workload evenly

• Use efficient transformations like map, filter, and reduce

• Cache intermediate results to avoid recomputation
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Q1. Explain your project and your role
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Q2. Data Model Interview questions
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Q3. Problem Solving Approach on few scenarios
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Zonal manger taken the interview along with Area manager

Q1. What motivates you to perform better?
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Q2. What is your professional objective in Life?
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Q3. What are the key habits you have for success?
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Q4. What is your salary expectation?
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