State your experience with Go and Kafka. Describe all SQL joins, not limited to inner, outer, and cross join.
Data Engineer Interview Questions
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Data integrity: Given transaction partition files (100 files), that are batch ingested with pipelines from storage (like S3) to a distributed DWH. What is the preferred data structure ingestion to allow data integrity? (each invoice is fixed or ingested only once). Details: - each invoice has its unique id, and each invoice contains a list of products to be added or fixed - the ingestion procedure upserts the data: update if the invoice already exists or insert if the invoice is new
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What is the difference between DELETE, TRUNCATE and DROP in SQL.
Given that the most recent blocks of a blockchain can be mutable, and can take some time to become immutable, how would you provision the blocks in a relational table?
Differentiate ETL and ELT pipeline
OOPs concepts 3rd highest salary String and list manipulation Coding Python basics
Data analysis, data cleaning, data set building
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