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Hitachi Energy
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ADF is a cloud-based data integration service while Synapse is an analytics service that brings together big data and data warehousing.
ADF is used for data integration and orchestration tasks, while Synapse is used for big data analytics and data warehousing
ADF allows you to create data pipelines to move and transform data, while Synapse provides a unified experience for data preparation, data management, data warehous...
RDD stands for Resilient Distributed Dataset, a fundamental data structure in Apache Spark.
RDD is a fault-tolerant collection of elements that can be operated on in parallel.
RDDs are immutable, meaning they cannot be changed once created.
RDDs support two types of operations: transformations (creating a new RDD from an existing one) and actions (returning a value to the driver program).
SCD1 and SCD2 are types of slowly changing dimensions used in data warehousing.
SCD1 (Type 1): Overwrites old data with new data, losing historical information.
SCD2 (Type 2): Keeps track of historical data by creating new records for changes.
SCD1 is simpler and faster, while SCD2 provides more detailed historical information.
Example: SCD1 would update a customer's address directly, while SCD2 would create a new record w...
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I applied via Referral and was interviewed in Dec 2023. There was 1 interview round.
Order of execution in SQL determines the sequence in which different clauses are processed in a query.
SQL query is processed in the following order: FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY.
FROM clause is processed first to retrieve data from tables.
WHERE clause filters the data based on specified conditions.
GROUP BY clause groups the data based on specified columns.
HAVING clause filters the grouped data.
SELECT ...
Mettle test and mcq were given in interview
I applied via Recruitment Consulltant and was interviewed before Apr 2023. There were 3 interview rounds.
posted on 3 Apr 2021
I applied via Referral and was interviewed in Oct 2020. There were 5 interview rounds.
I applied via Referral and was interviewed before Mar 2021. There were 2 interview rounds.
posted on 24 Apr 2021
I applied via Naukri.com and was interviewed before Apr 2020. There were 3 interview rounds.
I applied via Referral and was interviewed before Mar 2020. There were 3 interview rounds.
I applied via Referral and was interviewed before Apr 2021. There was 1 interview round.
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Siemens Energy
ABB
Schneider Electric
BHEL