- What is OLAP and what is the difference between OLAP and OLTP?
- What is ETL?
- What are fact tables and dimension tables?
- Why would we denormalize data in data warehouses?
- What is the difference between dimensions and measures?
- What is the purpose of partitioning?
- What is a partition key?
- Which partitioning schemes are supported by PostgreSQL? What are the typical use cases for each of them?
- How do we implement sub-partitioning?
- How do we utilize multiple CPU cores of the database server when executing a query?
- What are index-only scans?
- Is there a way to enable index-only scans for a field without building an index on that field?
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