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I applied via Referral and was interviewed before Sep 2022. There were 2 interview rounds.
I applied via Referral and was interviewed in Dec 2021. There were 4 interview rounds.
Joins are used to combine data from two or more tables based on a related column.
Types of joins include inner join, left join, right join, and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all rows from the left table and matching rows from the right table.
Right join returns all rows from the right table and matching rows from the left table.
Full outer join returns all row...
DataMetica interview questions for popular designations
I applied via campus placement at All India Shri Shivaji Memorial Society's College of Engineering, Pune and was interviewed before Jun 2021. There were 3 interview rounds.
Not hard
Get interview-ready with Top DataMetica Interview Questions
I applied via Naukri.com and was interviewed in Jan 2022. There was 1 interview round.
Answering interview questions for Senior Java Developer
To calculate age, subtract birth year from current year
To find department wise highest salary, group by department and find max salary
To find factorial number, use a loop to multiply numbers from 1 to n
I applied via Naukri.com and was interviewed in Jun 2021. There were 3 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Jan 2022. There were 2 interview rounds.
I have worked on optimizing data pipeline performance by implementing parallel processing, caching, and optimizing queries.
Implemented parallel processing to increase throughput
Utilized caching to reduce data retrieval time
Optimized queries to reduce database load
Used compression techniques to reduce data transfer time
Implemented load balancing to distribute workload
Used indexing to improve query performance
Best practices for DWH
Design a scalable and flexible architecture
Ensure data quality and consistency
Implement proper security measures
Use ETL tools for data integration
Create a data dictionary for easy understanding
Regularly monitor and optimize performance
Implement disaster recovery and backup plans
I applied via campus placement at Sinhagad Institute of Technology, Pune and was interviewed before Feb 2022. There were 4 interview rounds.
2 code tests with college level problems
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