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1

Explain the use of Elastic Resize vs. Classic Resize in Redshift.

SQLeasy
2

Explain the use of surrogate keys vs. natural keys in data modeling.

SQLmedium
3

Explain types of joins in Spark with examples.

SQLmedium
4

Explain your approach to optimizing a slow-running query on a table with billions of rows.

SQLmedium
5

Explain your understanding of indexing, partitioning, and execution plans.

SQLmedium
6

Fact vs Dimension Table - categorize data

SQLmedium
7

Facts and Dimension Tables Properties

SQLmedium
8

Features of NoSQL Databases

SQLhard

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