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Gramener Azure Data Engineer Interview Questions and Answers
Gramener Azure Data Engineer Interview Experiences
1 interview found
Anonymous
Selected
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There was 1 interview round.
(3 Questions)
- 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.
- Q2. VACCUM, OPTIMIZE, LAZY EVALUATION, SPARK ARCHITECTURE
- Q3. SQL PROGRAMS ( Tough )
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