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Data engineering interview questions · medium
What are Slowly Changing Dimensions (SCD), and how would you implement them for tracking customer data changes?
What are partitioning strategies in Redshift?
What are some best practices for writing efficient SQL queries?
What are the differences between normalization and denormalization? When would you use a denormalized structure?
What are the types of views?
What challenges arise with duplicate records, and how do you address them?
What factors determine the optimal number of partitions for a large file?
What inspires you to join Walmart?
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