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Questions tagged etl · medium
How would you read data from a web API? What steps would you follow after reading the data?
What is normalization and denormalization? When would you use each?
Describe Amazon Athena and how it interacts with S3.
Explain using AWS Glue for ETL. What challenges might you face with large datasets?
Lambda vs. Glue: Discuss use cases for both services.
Reverse operation for splitting values back to original format
Compare OLTP and OLAP systems in the context of financial transactions.
How would you handle duplicate or corrupted data in a batch ETL job?
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